56 lines
2.0 KiB
LLVM
56 lines
2.0 KiB
LLVM
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; Check if we can evaluate a bitcasted call to a function which is constant folded.
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; Evaluator folds call to fmodf, replacing it with constant value in case both operands
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; are known at compile time.
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; RUN: opt -globalopt -instcombine %s -S -o - | FileCheck %s
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; CHECK: @_q = dso_local local_unnamed_addr global %struct.Q { i32 1066527622 }
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; CHECK: define dso_local i32 @main
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; CHECK-NEXT: %[[V:.+]] = load i32, i32* getelementptr inbounds (%struct.Q, %struct.Q* @_q, i64 0, i32 0)
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; CHECK-NEXT: ret i32 %[[V]]
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source_filename = "main.cpp"
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-none-linux-gnu"
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%struct.Q = type { i32 }
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$_ZN1QC2Ev = comdat any
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@_q = dso_local global %struct.Q zeroinitializer, align 4
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@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_main.cpp, i8* null }]
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define internal void @__cxx_global_var_init() section ".text.startup" {
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call void @_ZN1QC2Ev(%struct.Q* @_q)
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ret void
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}
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define linkonce_odr dso_local void @_ZN1QC2Ev(%struct.Q*) unnamed_addr #1 comdat align 2 {
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%2 = alloca %struct.Q*, align 8
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store %struct.Q* %0, %struct.Q** %2, align 8
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%3 = load %struct.Q*, %struct.Q** %2, align 8
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%4 = getelementptr inbounds %struct.Q, %struct.Q* %3, i32 0, i32 0
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%5 = call i32 bitcast (float (float, float)* @fmodf to i32 (float, float)*)(float 0x40091EB860000000, float 2.000000e+00)
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store i32 %5, i32* %4, align 4
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ret void
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}
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define dso_local i32 @main(i32, i8**) {
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%3 = alloca i32, align 4
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%4 = alloca i32, align 4
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%5 = alloca i8**, align 8
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store i32 0, i32* %3, align 4
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store i32 %0, i32* %4, align 4
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store i8** %1, i8*** %5, align 8
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%6 = load i32, i32* getelementptr inbounds (%struct.Q, %struct.Q* @_q, i32 0, i32 0), align 4
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ret i32 %6
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}
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; Function Attrs: nounwind
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declare dso_local float @fmodf(float, float)
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; Function Attrs: noinline uwtable
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define internal void @_GLOBAL__sub_I_main.cpp() section ".text.startup" {
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call void @__cxx_global_var_init()
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ret void
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}
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