54 lines
1.7 KiB
LLVM
54 lines
1.7 KiB
LLVM
; 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 -passes=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, ptr @_q
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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, ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @_GLOBAL__sub_I_main.cpp, ptr null }]
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define internal void @__cxx_global_var_init() section ".text.startup" {
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call void @_ZN1QC2Ev(ptr @_q)
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ret void
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}
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define linkonce_odr dso_local void @_ZN1QC2Ev(ptr) unnamed_addr #1 comdat align 2 {
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%2 = alloca ptr, align 8
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store ptr %0, ptr %2, align 8
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%3 = load ptr, ptr %2, align 8
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%4 = call i32 @fmodf(float 0x40091EB860000000, float 2.000000e+00)
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store i32 %4, ptr %3, align 4
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ret void
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}
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define dso_local i32 @main(i32, ptr) {
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%3 = alloca i32, align 4
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%4 = alloca i32, align 4
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%5 = alloca ptr, align 8
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store i32 0, ptr %3, align 4
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store i32 %0, ptr %4, align 4
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store ptr %1, ptr %5, align 8
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%6 = load i32, ptr @_q, 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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