106 lines
3.2 KiB
LLVM
106 lines
3.2 KiB
LLVM
; This test check if redundant truncate for eq/ne cmp is skipped during code gen.
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;RUN: llc -mtriple=thumbv7-eabi < %s | FileCheck %s
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define void @test_zero(i16 signext %x) optsize {
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;CHECK-LABEL: test_zero
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entry:
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%tobool = icmp eq i16 %x, 0
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br i1 %tobool, label %if.else, label %if.then
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;CHECK-NOT: movw {{.*}}, #65535
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;CHECK: cbz r0,
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if.then: ; preds = %entry
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tail call void bitcast (void (...)* @foo1 to void ()*)()
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br label %if.end
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if.else: ; preds = %entry
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tail call void bitcast (void (...)* @foo2 to void ()*)()
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret void
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}
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define void @test_i8_nonzero(i18 signext %x) optsize {
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;CHECK-LABEL: test_i8_nonzero
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entry:
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%tobool = icmp eq i18 %x, 150
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br i1 %tobool, label %if.else, label %if.then
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;CHECK-NOT: bfc
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;CHECK: cmp r{{[0-9]+}}, #150
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if.then: ; preds = %entry
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tail call void bitcast (void (...)* @foo1 to void ()*)()
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br label %if.end
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if.else: ; preds = %entry
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tail call void bitcast (void (...)* @foo2 to void ()*)()
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret void
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}
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define void @test_i8_i16(i8 signext %x) optsize {
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;CHECK-LABEL: test_i8_i16
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entry:
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%x16 = sext i8 %x to i16
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%tobool = icmp eq i16 %x16, 300
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br i1 %tobool, label %if.else, label %if.then
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;CHECK-NOT: uxth r0, r0
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;CHECK: cmp.w r0, #300
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if.then: ; preds = %entry
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tail call void bitcast (void (...)* @foo1 to void ()*)()
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br label %if.end
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if.else: ; preds = %entry
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tail call void bitcast (void (...)* @foo2 to void ()*)()
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret void
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}
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define void @test_i16_i8(i16 signext %x) optsize {
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;CHECK-LABEL: test_i16_i8
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entry:
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;CHECK: uxtb [[REG:r[0-9+]]], r0
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;CHECK: cmp [[REG]], #128
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%x8 = trunc i16 %x to i8
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%tobool = icmp eq i8 %x8, 128
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br i1 %tobool, label %if.else, label %if.then
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if.then: ; preds = %entry
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tail call void bitcast (void (...)* @foo1 to void ()*)()
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br label %if.end
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if.else: ; preds = %entry
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tail call void bitcast (void (...)* @foo2 to void ()*)()
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret void
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}
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define void @test_zext_zero(i16 zeroext %x) optsize {
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;CHECK-LABEL: test_zext_zero
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entry:
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%tobool = icmp eq i16 %x, 0
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br i1 %tobool, label %if.else, label %if.then
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;CHECK-NOT: movw {{.*}}, #65535
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;CHECK: cbz r0,
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if.then: ; preds = %entry
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tail call void bitcast (void (...)* @foo1 to void ()*)()
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br label %if.end
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if.else: ; preds = %entry
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tail call void bitcast (void (...)* @foo2 to void ()*)()
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret void
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}
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declare void @foo1(...)
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declare void @foo2(...)
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