43 lines
1.4 KiB
LLVM
43 lines
1.4 KiB
LLVM
; RUN: opt -O3 -S < %s | FileCheck %s
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; Arg promotion eliminates the struct argument but may leave dead arguments after its work
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%struct.ss = type { i32, i64 }
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@dummy = global i32 0
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; CHECK: [[DUMMY:@.*]] = local_unnamed_addr global i32 0
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define internal void @f(%struct.ss* byval(%struct.ss) align 8 %b, i32* byval(i32) align 4 %X) noinline nounwind {
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; CHECK-LABEL: define {{[^@]+}}@f
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; CHECK-SAME: (i32 [[B_0:%.*]]){{[^#]*}} #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TEMP:%.*]] = add i32 [[B_0]], 1
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; CHECK-NEXT: store i32 [[TEMP]], i32* [[DUMMY]], align 4
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; CHECK-NEXT: ret void
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;
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entry:
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%temp = getelementptr %struct.ss, %struct.ss* %b, i32 0, i32 0
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%temp1 = load i32, i32* %temp, align 4
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%temp2 = add i32 %temp1, 1
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store i32 %temp2, i32* @dummy
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store i32 %temp2, i32* %X
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ret void
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}
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define i32 @test(i32* %X) {
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; CHECK-LABEL: define {{[^@]+}}@test
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; CHECK-SAME: (i32* {{[^%]*}} [[X:%.*]]){{[^#]*}} #[[ATTR1:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: tail call {{.*}}void @f(i32 1)
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%S = alloca %struct.ss, align 8
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%temp1 = getelementptr %struct.ss, %struct.ss* %S, i32 0, i32 0
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store i32 1, i32* %temp1, align 8
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%temp4 = getelementptr %struct.ss, %struct.ss* %S, i32 0, i32 1
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store i64 2, i64* %temp4, align 4
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call void @f( %struct.ss* byval(%struct.ss) align 8 %S, i32* byval(i32) align 4 %X)
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ret i32 0
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}
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