90 lines
2.5 KiB
LLVM
90 lines
2.5 KiB
LLVM
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; RUN: opt < %s -instcombine -S | FileCheck %s
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target datalayout = "e-p:32:32"
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target triple = "i686-pc-linux-gnu"
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define i32 @main() {
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; CHECK-LABEL: @main
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; CHECK: %[[call:.*]] = call i8* @ctime(i32* null)
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; CHECK: %[[cast:.*]] = ptrtoint i8* %[[call]] to i32
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; CHECK: ret i32 %[[cast]]
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entry:
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%tmp = call i32 bitcast (i8* (i32*)* @ctime to i32 (i32*)*)( i32* null ) ; <i32> [#uses=1]
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ret i32 %tmp
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}
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declare i8* @ctime(i32*)
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define internal { i8 } @foo(i32*) {
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entry:
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ret { i8 } { i8 0 }
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}
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define void @test_struct_ret() {
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; CHECK-LABEL: @test_struct_ret
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; CHECK-NOT: bitcast
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entry:
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%0 = call { i8 } bitcast ({ i8 } (i32*)* @foo to { i8 } (i16*)*)(i16* null)
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ret void
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}
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declare i32 @fn1(i32)
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define i32 @test1(i32* %a) {
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; CHECK-LABEL: @test1
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; CHECK: %[[cast:.*]] = ptrtoint i32* %a to i32
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; CHECK-NEXT: %[[call:.*]] = tail call i32 @fn1(i32 %[[cast]])
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; CHECK-NEXT: ret i32 %[[call]]
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entry:
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%call = tail call i32 bitcast (i32 (i32)* @fn1 to i32 (i32*)*)(i32* %a)
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ret i32 %call
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}
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declare i32 @fn2(i16)
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define i32 @test2(i32* %a) {
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; CHECK-LABEL: @test2
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; CHECK: %[[call:.*]] = tail call i32 bitcast (i32 (i16)* @fn2 to i32 (i32*)*)(i32* %a)
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; CHECK-NEXT: ret i32 %[[call]]
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entry:
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%call = tail call i32 bitcast (i32 (i16)* @fn2 to i32 (i32*)*)(i32* %a)
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ret i32 %call
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}
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declare i32 @fn3(i64)
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define i32 @test3(i32* %a) {
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; CHECK-LABEL: @test3
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; CHECK: %[[call:.*]] = tail call i32 bitcast (i32 (i64)* @fn3 to i32 (i32*)*)(i32* %a)
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; CHECK-NEXT: ret i32 %[[call]]
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entry:
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%call = tail call i32 bitcast (i32 (i64)* @fn3 to i32 (i32*)*)(i32* %a)
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ret i32 %call
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}
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declare i32 @fn4(i32) "thunk"
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define i32 @test4(i32* %a) {
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; CHECK-LABEL: @test4
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; CHECK: %[[call:.*]] = tail call i32 bitcast (i32 (i32)* @fn4 to i32 (i32*)*)(i32* %a)
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; CHECK-NEXT: ret i32 %[[call]]
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entry:
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%call = tail call i32 bitcast (i32 (i32)* @fn4 to i32 (i32*)*)(i32* %a)
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ret i32 %call
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}
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declare i1 @fn5({ i32, i32 }* byval({ i32, i32 }) align 4 %r)
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define i1 @test5() {
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; CHECK-LABEL: @test5
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; CHECK: %[[call:.*]] = call i1 bitcast (i1 ({ i32, i32 }*)* @fn5 to i1 (i32, i32)*)(i32 {{.*}}, i32 {{.*}})
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; CHECK-NEXT: ret i1 %[[call]]
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%1 = alloca { i32, i32 }, align 4
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%2 = getelementptr inbounds { i32, i32 }, { i32, i32 }* %1, i32 0, i32 0
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%3 = load i32, i32* %2, align 4
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%4 = getelementptr inbounds { i32, i32 }, { i32, i32 }* %1, i32 0, i32 1
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%5 = load i32, i32* %4, align 4
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%6 = call i1 bitcast (i1 ({ i32, i32 }*)* @fn5 to i1 (i32, i32)*)(i32 %3, i32 %5)
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ret i1 %6
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}
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