| ; 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 |
| entry: |
| %tobool = icmp eq i16 %x, 0 |
| br i1 %tobool, label %if.else, label %if.then |
| ;CHECK-NOT: movw {{.*}}, #65535 |
| ;CHECK: cbz r0, |
| 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 |
| entry: |
| %tobool = icmp eq i18 %x, 150 |
| br i1 %tobool, label %if.else, label %if.then |
| ;CHECK-NOT: bfc |
| ;CHECK: cmp r{{[0-9]+}}, #150 |
| 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 |
| entry: |
| %x16 = sext i8 %x to i16 |
| %tobool = icmp eq i16 %x16, 300 |
| br i1 %tobool, label %if.else, label %if.then |
| ;CHECK-NOT: uxth r0, r0 |
| ;CHECK: cmp.w r0, #300 |
| 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 |
| entry: |
| ;CHECK: uxtb [[REG:r[0-9+]]], r0 |
| ;CHECK: cmp [[REG]], #128 |
| %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 |
| entry: |
| %tobool = icmp eq i16 %x, 0 |
| br i1 %tobool, label %if.else, label %if.then |
| ;CHECK-NOT: movw {{.*}}, #65535 |
| ;CHECK: cbz r0, |
| 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(...) |
| |
| |
