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llvm / llvm-project / llvm / cd44f13d389ec38f03f9e668045ef78fdf8b594f / . / test / CodeGen / ARM / ssat.ll
blob: ed777f2b1882bef05fff467bdce8c3ccd9c8b74a [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=armv4t-eabi %s -o - | FileCheck %s --check-prefix=V4T
; RUN: llc -mtriple=armv6t2-eabi %s -o - | FileCheck %s --check-prefix=V6T2
; Check for several conditions that should result in SSAT.
; For example, the base test is equivalent to
; x < -k ? -k : (x > k ? k : x) in C. All patterns that bound x
; to the interval [-k, k] where k is a power of 2 can be
; transformed into SSAT. At the end there are some tests
; checking that conditionals are not transformed if they don't
; match the right pattern.
;
; Base tests with different bit widths
;
; x < -k ? -k : (x > k ? k : x)
; 32-bit base test
define i32 @sat_base_32bit(i32 %x) #0 {
; V4T-LABEL: sat_base_32bit:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: ldr r1, .LCPI0_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: movle r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI0_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: sat_base_32bit:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = icmp slt i32 %x, 8388607
%saturateUp = select i1 %0, i32 %x, i32 8388607
%1 = icmp sgt i32 %saturateUp, -8388608
%saturateLow = select i1 %1, i32 %saturateUp, i32 -8388608
ret i32 %saturateLow
}
; x < -k ? -k : (x > k ? k : x)
; 16-bit base test
define i16 @sat_base_16bit(i16 %x) #0 {
; V4T-LABEL: sat_base_16bit:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r2, #255
; V4T-NEXT: lsl r1, r0, #16
; V4T-NEXT: orr r2, r2, #1792
; V4T-NEXT: asr r1, r1, #16
; V4T-NEXT: cmp r1, r2
; V4T-NEXT: movge r0, r2
; V4T-NEXT: ldr r2, .LCPI1_0
; V4T-NEXT: lsl r1, r0, #16
; V4T-NEXT: asr r1, r1, #16
; V4T-NEXT: cmn r1, #2048
; V4T-NEXT: movle r0, r2
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI1_0:
; V4T-NEXT: .long 4294965248 @ 0xfffff800
;
; V6T2-LABEL: sat_base_16bit:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: sxth r1, r0
; V6T2-NEXT: movw r2, #2047
; V6T2-NEXT: cmp r1, r2
; V6T2-NEXT: movge r0, r2
; V6T2-NEXT: movw r2, #63488
; V6T2-NEXT: sxth r1, r0
; V6T2-NEXT: movt r2, #65535
; V6T2-NEXT: cmn r1, #2048
; V6T2-NEXT: movle r0, r2
; V6T2-NEXT: bx lr
entry:
%0 = icmp slt i16 %x, 2047
%saturateUp = select i1 %0, i16 %x, i16 2047
%1 = icmp sgt i16 %saturateUp, -2048
%saturateLow = select i1 %1, i16 %saturateUp, i16 -2048
ret i16 %saturateLow
}
; x < -k ? -k : (x > k ? k : x)
; 8-bit base test
define i8 @sat_base_8bit(i8 %x) #0 {
; V4T-LABEL: sat_base_8bit:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: lsl r1, r0, #24
; V4T-NEXT: asr r1, r1, #24
; V4T-NEXT: cmp r1, #31
; V4T-NEXT: movge r0, #31
; V4T-NEXT: lsl r1, r0, #24
; V4T-NEXT: asr r1, r1, #24
; V4T-NEXT: cmn r1, #32
; V4T-NEXT: mvnle r0, #31
; V4T-NEXT: bx lr
;
; V6T2-LABEL: sat_base_8bit:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: sxtb r1, r0
; V6T2-NEXT: cmp r1, #31
; V6T2-NEXT: movge r0, #31
; V6T2-NEXT: sxtb r1, r0
; V6T2-NEXT: cmn r1, #32
; V6T2-NEXT: mvnle r0, #31
; V6T2-NEXT: bx lr
entry:
%0 = icmp slt i8 %x, 31
%saturateUp = select i1 %0, i8 %x, i8 31
%1 = icmp sgt i8 %saturateUp, -32
%saturateLow = select i1 %1, i8 %saturateUp, i8 -32
ret i8 %saturateLow
}
;
; Tests where the conditionals that check for upper and lower bounds,
; or the < and > operators, are arranged in different ways. Only some
; of the possible combinations that lead to SSAT are tested.
;
; x < -k ? -k : (x < k ? x : k)
define i32 @sat_lower_upper_1(i32 %x) #0 {
; V4T-LABEL: sat_lower_upper_1:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: ldr r1, .LCPI3_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: movle r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI3_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: sat_lower_upper_1:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%cmpUp = icmp slt i32 %x, 8388607
%saturateUp = select i1 %cmpUp, i32 %x, i32 8388607
%0 = icmp sgt i32 %saturateUp, -8388608
%saturateLow = select i1 %0, i32 %saturateUp, i32 -8388608
ret i32 %saturateLow
}
; x > -k ? (x > k ? k : x) : -k
define i32 @sat_lower_upper_2(i32 %x) #0 {
; V4T-LABEL: sat_lower_upper_2:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: ldr r1, .LCPI4_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: movle r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI4_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: sat_lower_upper_2:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = icmp slt i32 %x, 8388607
%saturateUp = select i1 %0, i32 %x, i32 8388607
%1 = icmp sgt i32 %saturateUp, -8388608
%saturateLow = select i1 %1, i32 %saturateUp, i32 -8388608
ret i32 %saturateLow
}
; x < k ? (x < -k ? -k : x) : k
define i32 @sat_upper_lower_1(i32 %x) #0 {
; V4T-LABEL: sat_upper_lower_1:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: movle r0, r1
; V4T-NEXT: ldr r1, .LCPI5_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI5_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: sat_upper_lower_1:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = icmp sgt i32 %x, -8388608
%saturateLow = select i1 %0, i32 %x, i32 -8388608
%1 = icmp slt i32 %saturateLow, 8388607
%saturateUp = select i1 %1, i32 %saturateLow, i32 8388607
ret i32 %saturateUp
}
; x > k ? k : (x < -k ? -k : x)
define i32 @sat_upper_lower_2(i32 %x) #0 {
; V4T-LABEL: sat_upper_lower_2:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: movle r0, r1
; V4T-NEXT: ldr r1, .LCPI6_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI6_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: sat_upper_lower_2:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = icmp sgt i32 %x, -8388608
%saturateLow = select i1 %0, i32 %x, i32 -8388608
%1 = icmp slt i32 %saturateLow, 8388607
%saturateUp = select i1 %1, i32 %saturateLow, i32 8388607
ret i32 %saturateUp
}
; k < x ? k : (x > -k ? x : -k)
define i32 @sat_upper_lower_3(i32 %x) #0 {
; V4T-LABEL: sat_upper_lower_3:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: movle r0, r1
; V4T-NEXT: ldr r1, .LCPI7_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI7_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: sat_upper_lower_3:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%cmpLow = icmp sgt i32 %x, -8388608
%saturateLow = select i1 %cmpLow, i32 %x, i32 -8388608
%0 = icmp slt i32 %saturateLow, 8388607
%saturateUp = select i1 %0, i32 %saturateLow, i32 8388607
ret i32 %saturateUp
}
;
; Miscellanea
;
; Check that >= and <= work the same as > and <
; k <= x ? k : (x >= -k ? x : -k)
define i32 @sat_le_ge(i32 %x) #0 {
; V4T-LABEL: sat_le_ge:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: movle r0, r1
; V4T-NEXT: ldr r1, .LCPI8_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI8_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: sat_le_ge:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = icmp sgt i32 %x, -8388608
%saturateLow = select i1 %0, i32 %x, i32 -8388608
%1 = icmp slt i32 %saturateLow, 8388607
%saturateUp = select i1 %1, i32 %saturateLow, i32 8388607
ret i32 %saturateUp
}
;
; The following tests check for patterns that should not transform
; into SSAT but are similar enough that could confuse the selector.
;
; x > k ? k : (x > -k ? -k : x)
; First condition upper-saturates, second doesn't lower-saturate.
define i32 @no_sat_missing_lower(i32 %x) #0 {
; V4T-LABEL: no_sat_missing_lower:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r2, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r2, r2, #-1073741824
; V4T-NEXT: ldr r1, .LCPI9_0
; V4T-NEXT: movlt r2, r0
; V4T-NEXT: cmp r0, #8388608
; V4T-NEXT: movlt r1, r2
; V4T-NEXT: mov r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI9_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: no_sat_missing_lower:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: movw r1, #0
; V6T2-NEXT: cmn r0, #8388608
; V6T2-NEXT: movt r1, #65408
; V6T2-NEXT: movlt r1, r0
; V6T2-NEXT: cmp r0, #8388608
; V6T2-NEXT: movwge r1, #65535
; V6T2-NEXT: movtge r1, #127
; V6T2-NEXT: mov r0, r1
; V6T2-NEXT: bx lr
entry:
%cmpUp = icmp sgt i32 %x, 8388607
%0 = icmp slt i32 %x, -8388608
%saturateLow = select i1 %0, i32 %x, i32 -8388608
%saturateUp = select i1 %cmpUp, i32 8388607, i32 %saturateLow
ret i32 %saturateUp
}
; x < k ? k : (x < -k ? -k : x)
; Second condition lower-saturates, first doesn't upper-saturate.
define i32 @no_sat_missing_upper(i32 %x) #0 {
; V4T-LABEL: no_sat_missing_upper:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: ldr r2, .LCPI10_0
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: movgt r1, r0
; V4T-NEXT: cmp r0, r2
; V4T-NEXT: movlt r1, r2
; V4T-NEXT: mov r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI10_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: no_sat_missing_upper:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: movw r1, #0
; V6T2-NEXT: movw r2, #65535
; V6T2-NEXT: movt r1, #65408
; V6T2-NEXT: cmn r0, #8388608
; V6T2-NEXT: movgt r1, r0
; V6T2-NEXT: movt r2, #127
; V6T2-NEXT: cmp r0, r2
; V6T2-NEXT: movwlt r1, #65535
; V6T2-NEXT: movtlt r1, #127
; V6T2-NEXT: mov r0, r1
; V6T2-NEXT: bx lr
entry:
%cmpUp = icmp slt i32 %x, 8388607
%0 = icmp sgt i32 %x, -8388608
%saturateLow = select i1 %0, i32 %x, i32 -8388608
%saturateUp = select i1 %cmpUp, i32 8388607, i32 %saturateLow
ret i32 %saturateUp
}
; Lower constant is different in the select and in the compare
define i32 @no_sat_incorrect_constant(i32 %x) #0 {
; V4T-LABEL: no_sat_incorrect_constant:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: mov r2, r0
; V4T-NEXT: orrlt r2, r1, #1
; V4T-NEXT: ldr r1, .LCPI11_0
; V4T-NEXT: cmp r0, #8388608
; V4T-NEXT: movlt r1, r2
; V4T-NEXT: mov r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI11_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: no_sat_incorrect_constant:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: movw r2, #0
; V6T2-NEXT: cmn r0, #8388608
; V6T2-NEXT: mov r1, r0
; V6T2-NEXT: movt r2, #65408
; V6T2-NEXT: orrlt r1, r2, #1
; V6T2-NEXT: cmp r0, #8388608
; V6T2-NEXT: movwge r1, #65535
; V6T2-NEXT: movtge r1, #127
; V6T2-NEXT: mov r0, r1
; V6T2-NEXT: bx lr
entry:
%cmpUp = icmp sgt i32 %x, 8388607
%cmpLow = icmp slt i32 %x, -8388608
%saturateLow = select i1 %cmpLow, i32 -8388607, i32 %x
%saturateUp = select i1 %cmpUp, i32 8388607, i32 %saturateLow
ret i32 %saturateUp
}
; The interval is not [k, ~k]
define i32 @no_sat_incorrect_interval(i32 %x) #0 {
; V4T-LABEL: no_sat_incorrect_interval:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: ldr r1, .LCPI12_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movle r0, r1
; V4T-NEXT: ldr r1, .LCPI12_1
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI12_0:
; V4T-NEXT: .long 4275878552 @ 0xfedcba98
; V4T-NEXT: .LCPI12_1:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: no_sat_incorrect_interval:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: movw r1, #47768
; V6T2-NEXT: movt r1, #65244
; V6T2-NEXT: cmp r0, r1
; V6T2-NEXT: movle r0, r1
; V6T2-NEXT: movw r1, #65535
; V6T2-NEXT: movt r1, #127
; V6T2-NEXT: cmp r0, r1
; V6T2-NEXT: movge r0, r1
; V6T2-NEXT: bx lr
entry:
%0 = icmp sgt i32 %x, -19088744
%saturateLow = select i1 %0, i32 %x, i32 -19088744
%1 = icmp slt i32 %saturateLow, 8388607
%saturateUp = select i1 %1, i32 %saturateLow, i32 8388607
ret i32 %saturateUp
}
; The returned value (y) is not the same as the tested value (x).
define i32 @no_sat_incorrect_return(i32 %x, i32 %y) #0 {
; V4T-LABEL: no_sat_incorrect_return:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r2, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r2, r2, #-1073741824
; V4T-NEXT: movge r2, r1
; V4T-NEXT: ldr r1, .LCPI13_0
; V4T-NEXT: cmp r0, #8388608
; V4T-NEXT: movlt r1, r2
; V4T-NEXT: mov r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI13_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: no_sat_incorrect_return:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: cmn r0, #8388608
; V6T2-NEXT: movwlt r1, #0
; V6T2-NEXT: movtlt r1, #65408
; V6T2-NEXT: cmp r0, #8388608
; V6T2-NEXT: movwge r1, #65535
; V6T2-NEXT: movtge r1, #127
; V6T2-NEXT: mov r0, r1
; V6T2-NEXT: bx lr
entry:
%cmpUp = icmp sgt i32 %x, 8388607
%cmpLow = icmp slt i32 %x, -8388608
%saturateLow = select i1 %cmpLow, i32 -8388608, i32 %y
%saturateUp = select i1 %cmpUp, i32 8388607, i32 %saturateLow
ret i32 %saturateUp
}
; One of the values in a compare (y) is not the same as the rest
; of the compare and select values (x).
define i32 @no_sat_incorrect_compare(i32 %x, i32 %y) #0 {
; V4T-LABEL: no_sat_incorrect_compare:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r2, #1065353216
; V4T-NEXT: cmn r1, #8388608
; V4T-NEXT: orr r2, r2, #-1073741824
; V4T-NEXT: ldr r1, .LCPI14_0
; V4T-NEXT: movge r2, r0
; V4T-NEXT: cmp r0, #8388608
; V4T-NEXT: movlt r1, r2
; V4T-NEXT: mov r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI14_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: no_sat_incorrect_compare:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: cmn r1, #8388608
; V6T2-NEXT: mov r1, r0
; V6T2-NEXT: movwlt r1, #0
; V6T2-NEXT: movtlt r1, #65408
; V6T2-NEXT: cmp r0, #8388608
; V6T2-NEXT: movwge r1, #65535
; V6T2-NEXT: movtge r1, #127
; V6T2-NEXT: mov r0, r1
; V6T2-NEXT: bx lr
entry:
%cmpUp = icmp sgt i32 %x, 8388607
%cmpLow = icmp slt i32 %y, -8388608
%saturateLow = select i1 %cmpLow, i32 -8388608, i32 %x
%saturateUp = select i1 %cmpUp, i32 8388607, i32 %saturateLow
ret i32 %saturateUp
}
define void @extended(i32 %xx, i16 signext %y, ptr nocapture %z) {
; V4T-LABEL: extended:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: add r0, r1, r0, lsr #16
; V4T-NEXT: lsl r1, r0, #16
; V4T-NEXT: asr r1, r1, #16
; V4T-NEXT: cmp r1, #127
; V4T-NEXT: movge r0, #127
; V4T-NEXT: lsl r1, r0, #16
; V4T-NEXT: asr r1, r1, #16
; V4T-NEXT: cmn r1, #128
; V4T-NEXT: mvnle r0, #127
; V4T-NEXT: strb r0, [r2]
; V4T-NEXT: bx lr
;
; V6T2-LABEL: extended:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: add r0, r1, r0, lsr #16
; V6T2-NEXT: sxth r1, r0
; V6T2-NEXT: cmp r1, #127
; V6T2-NEXT: movge r0, #127
; V6T2-NEXT: sxth r1, r0
; V6T2-NEXT: cmn r1, #128
; V6T2-NEXT: mvnle r0, #127
; V6T2-NEXT: strb r0, [r2]
; V6T2-NEXT: bx lr
entry:
%0 = lshr i32 %xx, 16
%1 = trunc i32 %0 to i16
%conv3 = add i16 %1, %y
%cmp.i = icmp slt i16 %conv3, 127
%cond.i = select i1 %cmp.i, i16 %conv3, i16 127
%cmp.i11 = icmp sgt i16 %cond.i, -128
%cond.i12 = select i1 %cmp.i11, i16 %cond.i, i16 -128
%conv5 = trunc i16 %cond.i12 to i8
store i8 %conv5, ptr %z, align 1
ret void
}
define i32 @formulated_valid(i32 %a) {
; V4T-LABEL: formulated_valid:
; V4T: @ %bb.0:
; V4T-NEXT: lsl r1, r0, #16
; V4T-NEXT: asr r1, r1, #16
; V4T-NEXT: cmp r1, #127
; V4T-NEXT: movge r0, #127
; V4T-NEXT: lsl r1, r0, #16
; V4T-NEXT: asr r1, r1, #16
; V4T-NEXT: cmn r1, #128
; V4T-NEXT: mov r1, #255
; V4T-NEXT: mvnle r0, #127
; V4T-NEXT: orr r1, r1, #65280
; V4T-NEXT: and r0, r0, r1
; V4T-NEXT: bx lr
;
; V6T2-LABEL: formulated_valid:
; V6T2: @ %bb.0:
; V6T2-NEXT: sxth r1, r0
; V6T2-NEXT: cmp r1, #127
; V6T2-NEXT: movge r0, #127
; V6T2-NEXT: sxth r1, r0
; V6T2-NEXT: cmn r1, #128
; V6T2-NEXT: mvnle r0, #127
; V6T2-NEXT: uxth r0, r0
; V6T2-NEXT: bx lr
%x1 = trunc i32 %a to i16
%x2 = sext i16 %x1 to i32
%c1 = icmp slt i32 %x2, 127
%s1 = select i1 %c1, i32 %a, i32 127
%y1 = trunc i32 %s1 to i16
%y2 = sext i16 %y1 to i32
%c2 = icmp sgt i32 %y2, -128
%s2 = select i1 %c2, i32 %s1, i32 -128
%r = and i32 %s2, 65535
ret i32 %r
}
define i32 @formulated_invalid(i32 %a) {
; V4T-LABEL: formulated_invalid:
; V4T: @ %bb.0:
; V4T-NEXT: lsl r1, r0, #16
; V4T-NEXT: asr r1, r1, #16
; V4T-NEXT: cmp r1, #127
; V4T-NEXT: movge r0, #127
; V4T-NEXT: lsl r1, r0, #16
; V4T-NEXT: asr r1, r1, #16
; V4T-NEXT: cmn r1, #128
; V4T-NEXT: mvnle r0, #127
; V4T-NEXT: bic r0, r0, #-16777216
; V4T-NEXT: bx lr
;
; V6T2-LABEL: formulated_invalid:
; V6T2: @ %bb.0:
; V6T2-NEXT: sxth r1, r0
; V6T2-NEXT: cmp r1, #127
; V6T2-NEXT: movge r0, #127
; V6T2-NEXT: sxth r1, r0
; V6T2-NEXT: cmn r1, #128
; V6T2-NEXT: mvnle r0, #127
; V6T2-NEXT: bic r0, r0, #-16777216
; V6T2-NEXT: bx lr
%x1 = trunc i32 %a to i16
%x2 = sext i16 %x1 to i32
%c1 = icmp slt i32 %x2, 127
%s1 = select i1 %c1, i32 %a, i32 127
%y1 = trunc i32 %s1 to i16
%y2 = sext i16 %y1 to i32
%c2 = icmp sgt i32 %y2, -128
%s2 = select i1 %c2, i32 %s1, i32 -128
%r = and i32 %s2, 16777215
ret i32 %r
}
define i32 @mm_sat_base_32bit(i32 %x) {
; V4T-LABEL: mm_sat_base_32bit:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: ldr r1, .LCPI18_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: movle r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI18_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: mm_sat_base_32bit:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = call i32 @llvm.smin.i32(i32 %x, i32 8388607)
%1 = call i32 @llvm.smax.i32(i32 %0, i32 -8388608)
ret i32 %1
}
define i16 @mm_sat_base_16bit(i16 %x) {
; V4T-LABEL: mm_sat_base_16bit:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r2, #255
; V4T-NEXT: lsl r0, r0, #16
; V4T-NEXT: orr r2, r2, #1792
; V4T-NEXT: asr r1, r0, #16
; V4T-NEXT: cmp r1, r2
; V4T-NEXT: asrlt r2, r0, #16
; V4T-NEXT: ldr r0, .LCPI19_0
; V4T-NEXT: cmn r2, #2048
; V4T-NEXT: movgt r0, r2
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI19_0:
; V4T-NEXT: .long 4294965248 @ 0xfffff800
;
; V6T2-LABEL: mm_sat_base_16bit:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: sxth r0, r0
; V6T2-NEXT: ssat r0, #12, r0
; V6T2-NEXT: bx lr
entry:
%0 = call i16 @llvm.smin.i16(i16 %x, i16 2047)
%1 = call i16 @llvm.smax.i16(i16 %0, i16 -2048)
ret i16 %1
}
define i8 @mm_sat_base_8bit(i8 %x) {
; V4T-LABEL: mm_sat_base_8bit:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: lsl r1, r0, #24
; V4T-NEXT: mov r0, #31
; V4T-NEXT: asr r2, r1, #24
; V4T-NEXT: cmp r2, #31
; V4T-NEXT: asrlt r0, r1, #24
; V4T-NEXT: cmn r0, #32
; V4T-NEXT: mvnle r0, #31
; V4T-NEXT: bx lr
;
; V6T2-LABEL: mm_sat_base_8bit:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: sxtb r0, r0
; V6T2-NEXT: ssat r0, #6, r0
; V6T2-NEXT: bx lr
entry:
%0 = call i8 @llvm.smin.i8(i8 %x, i8 31)
%1 = call i8 @llvm.smax.i8(i8 %0, i8 -32)
ret i8 %1
}
define i32 @mm_sat_lower_upper_1(i32 %x) {
; V4T-LABEL: mm_sat_lower_upper_1:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: ldr r1, .LCPI21_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: movle r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI21_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: mm_sat_lower_upper_1:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = call i32 @llvm.smin.i32(i32 %x, i32 8388607)
%1 = call i32 @llvm.smax.i32(i32 %0, i32 -8388608)
ret i32 %1
}
define i32 @mm_sat_lower_upper_2(i32 %x) {
; V4T-LABEL: mm_sat_lower_upper_2:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: ldr r1, .LCPI22_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: movle r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI22_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: mm_sat_lower_upper_2:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = call i32 @llvm.smin.i32(i32 %x, i32 8388607)
%1 = call i32 @llvm.smax.i32(i32 %0, i32 -8388608)
ret i32 %1
}
define i32 @mm_sat_upper_lower_1(i32 %x) {
; V4T-LABEL: mm_sat_upper_lower_1:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: movle r0, r1
; V4T-NEXT: ldr r1, .LCPI23_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI23_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: mm_sat_upper_lower_1:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = call i32 @llvm.smax.i32(i32 %x, i32 -8388608)
%1 = call i32 @llvm.smin.i32(i32 %0, i32 8388607)
ret i32 %1
}
define i32 @mm_sat_upper_lower_2(i32 %x) {
; V4T-LABEL: mm_sat_upper_lower_2:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: movle r0, r1
; V4T-NEXT: ldr r1, .LCPI24_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI24_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: mm_sat_upper_lower_2:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = call i32 @llvm.smax.i32(i32 %x, i32 -8388608)
%1 = call i32 @llvm.smin.i32(i32 %0, i32 8388607)
ret i32 %1
}
define i32 @mm_sat_upper_lower_3(i32 %x) {
; V4T-LABEL: mm_sat_upper_lower_3:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: movle r0, r1
; V4T-NEXT: ldr r1, .LCPI25_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI25_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: mm_sat_upper_lower_3:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = call i32 @llvm.smax.i32(i32 %x, i32 -8388608)
%1 = call i32 @llvm.smin.i32(i32 %0, i32 8388607)
ret i32 %1
}
define i32 @mm_sat_le_ge(i32 %x) {
; V4T-LABEL: mm_sat_le_ge:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: mov r1, #1065353216
; V4T-NEXT: cmn r0, #8388608
; V4T-NEXT: orr r1, r1, #-1073741824
; V4T-NEXT: movle r0, r1
; V4T-NEXT: ldr r1, .LCPI26_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI26_0:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: mm_sat_le_ge:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: ssat r0, #24, r0
; V6T2-NEXT: bx lr
entry:
%0 = call i32 @llvm.smax.i32(i32 %x, i32 -8388608)
%1 = call i32 @llvm.smin.i32(i32 %0, i32 8388607)
ret i32 %1
}
define i32 @mm_no_sat_incorrect_interval(i32 %x) {
; V4T-LABEL: mm_no_sat_incorrect_interval:
; V4T: @ %bb.0: @ %entry
; V4T-NEXT: ldr r1, .LCPI27_0
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movle r0, r1
; V4T-NEXT: ldr r1, .LCPI27_1
; V4T-NEXT: cmp r0, r1
; V4T-NEXT: movge r0, r1
; V4T-NEXT: bx lr
; V4T-NEXT: .p2align 2
; V4T-NEXT: @ %bb.1:
; V4T-NEXT: .LCPI27_0:
; V4T-NEXT: .long 4275878552 @ 0xfedcba98
; V4T-NEXT: .LCPI27_1:
; V4T-NEXT: .long 8388607 @ 0x7fffff
;
; V6T2-LABEL: mm_no_sat_incorrect_interval:
; V6T2: @ %bb.0: @ %entry
; V6T2-NEXT: movw r1, #47768
; V6T2-NEXT: movt r1, #65244
; V6T2-NEXT: cmp r0, r1
; V6T2-NEXT: movle r0, r1
; V6T2-NEXT: movw r1, #65535
; V6T2-NEXT: movt r1, #127
; V6T2-NEXT: cmp r0, r1
; V6T2-NEXT: movge r0, r1
; V6T2-NEXT: bx lr
entry:
%0 = call i32 @llvm.smax.i32(i32 %x, i32 -19088744)
%1 = call i32 @llvm.smin.i32(i32 %0, i32 8388607)
ret i32 %1
}
declare i32 @llvm.smin.i32(i32, i32)
declare i32 @llvm.smax.i32(i32, i32)
declare i16 @llvm.smin.i16(i16, i16)
declare i16 @llvm.smax.i16(i16, i16)
declare i8 @llvm.smin.i8(i8, i8)
declare i8 @llvm.smax.i8(i8, i8)