| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; This test check if redundant truncate for eq/ne cmp is skipped during code gen. |
| ;RUN: llc -mtriple=thumbv7-eabi < %s | FileCheck %s |
| |
| define void @test_zero(i16 signext %x) optsize { |
| ; CHECK-LABEL: test_zero: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: cbz r0, .LBB0_2 |
| ; CHECK-NEXT: @ %bb.1: @ %if.then |
| ; CHECK-NEXT: b foo1 |
| ; CHECK-NEXT: .LBB0_2: @ %if.else |
| ; CHECK-NEXT: b foo2 |
| entry: |
| %tobool = icmp eq i16 %x, 0 |
| br i1 %tobool, label %if.else, label %if.then |
| if.then: ; preds = %entry |
| tail call void bitcast (void (...)* @foo1 to void ()*)() |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| tail call void bitcast (void (...)* @foo2 to void ()*)() |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| ret void |
| } |
| |
| define void @test_i8_nonzero(i18 signext %x) optsize { |
| ; CHECK-LABEL: test_i8_nonzero: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: cmp r0, #150 |
| ; CHECK-NEXT: it eq |
| ; CHECK-NEXT: beq foo2 |
| ; CHECK-NEXT: .LBB1_1: @ %if.then |
| ; CHECK-NEXT: b foo1 |
| entry: |
| %tobool = icmp eq i18 %x, 150 |
| br i1 %tobool, label %if.else, label %if.then |
| if.then: ; preds = %entry |
| tail call void bitcast (void (...)* @foo1 to void ()*)() |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| tail call void bitcast (void (...)* @foo2 to void ()*)() |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| ret void |
| } |
| |
| define void @test_i8_i16(i8 signext %x) optsize { |
| ; CHECK-LABEL: test_i8_i16: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: cmp.w r0, #300 |
| ; CHECK-NEXT: it eq |
| ; CHECK-NEXT: beq foo2 |
| ; CHECK-NEXT: .LBB2_1: @ %if.then |
| ; CHECK-NEXT: b foo1 |
| entry: |
| %x16 = sext i8 %x to i16 |
| %tobool = icmp eq i16 %x16, 300 |
| br i1 %tobool, label %if.else, label %if.then |
| if.then: ; preds = %entry |
| tail call void bitcast (void (...)* @foo1 to void ()*)() |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| tail call void bitcast (void (...)* @foo2 to void ()*)() |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| ret void |
| } |
| |
| define void @test_i16_i8(i16 signext %x) optsize { |
| ; CHECK-LABEL: test_i16_i8: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: uxtb r0, r0 |
| ; CHECK-NEXT: cmp r0, #128 |
| ; CHECK-NEXT: it eq |
| ; CHECK-NEXT: beq foo2 |
| ; CHECK-NEXT: .LBB3_1: @ %if.then |
| ; CHECK-NEXT: b foo1 |
| entry: |
| %x8 = trunc i16 %x to i8 |
| %tobool = icmp eq i8 %x8, 128 |
| br i1 %tobool, label %if.else, label %if.then |
| if.then: ; preds = %entry |
| tail call void bitcast (void (...)* @foo1 to void ()*)() |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| tail call void bitcast (void (...)* @foo2 to void ()*)() |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| ret void |
| } |
| |
| define void @test_zext_zero(i16 zeroext %x) optsize { |
| ; CHECK-LABEL: test_zext_zero: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: cbz r0, .LBB4_2 |
| ; CHECK-NEXT: @ %bb.1: @ %if.then |
| ; CHECK-NEXT: b foo1 |
| ; CHECK-NEXT: .LBB4_2: @ %if.else |
| ; CHECK-NEXT: b foo2 |
| entry: |
| %tobool = icmp eq i16 %x, 0 |
| br i1 %tobool, label %if.else, label %if.then |
| if.then: ; preds = %entry |
| tail call void bitcast (void (...)* @foo1 to void ()*)() |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| tail call void bitcast (void (...)* @foo2 to void ()*)() |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| ret void |
| } |
| |
| declare void @foo1(...) |
| declare void @foo2(...) |
