blob: d3e31d192d570bf64387f075ee7dbd522cd58bfe [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=thumbv7m-none-eabi -mcpu=cortex-m7 | FileCheck %s --check-prefix=CHECK
; RUN: llc < %s -mtriple=thumbv7m-none-eabi -mcpu=cortex-m7 -arm-data-bank-mask=-1 | FileCheck %s --check-prefix=NOBANK
; This tests the cortex-m7 bank conflict hazard recognizer.
; Normally both loads would be scheduled early (both in the first cycle) due to
; their latency. But will bank conflict to TCM so are scheduled in different
; cycles.
define i32 @test(ptr %x0, i32 %y, i32 %z) {
; CHECK-LABEL: test:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: ldr r3, [r0]
; CHECK-NEXT: subs r1, r3, r1
; CHECK-NEXT: ldr r0, [r0, #8]
; CHECK-NEXT: subs r1, r1, r2
; CHECK-NEXT: adds r1, #1
; CHECK-NEXT: muls r0, r1, r0
; CHECK-NEXT: bx lr
; NOBANK-LABEL: test:
; NOBANK: @ %bb.0: @ %entry
; NOBANK-NEXT: ldr r3, [r0]
; NOBANK-NEXT: ldr r0, [r0, #8]
; NOBANK-NEXT: subs r1, r3, r1
; NOBANK-NEXT: subs r1, r1, r2
; NOBANK-NEXT: adds r1, #1
; NOBANK-NEXT: muls r0, r1, r0
; NOBANK-NEXT: bx lr
entry:
%0 = load i32, ptr %x0, align 4
%mul3 = add nsw i32 %0, 1
%mul = sub nsw i32 %mul3, %y
%sub = sub nsw i32 %mul, %z
%arrayidx1 = getelementptr inbounds i32, ptr %x0, i32 2
%1 = load i32, ptr %arrayidx1, align 4
%mul2 = mul nsw i32 %sub, %1
ret i32 %mul2
}