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150
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1 ; Check if we can evaluate a bitcasted call to a function which is constant folded.
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2 ; Evaluator folds call to fmodf, replacing it with constant value in case both operands
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3 ; are known at compile time.
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4 ; RUN: opt -globalopt -instcombine %s -S -o - | FileCheck %s
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5
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6 ; CHECK: @_q = dso_local local_unnamed_addr global %struct.Q { i32 1066527622 }
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7 ; CHECK: define dso_local i32 @main
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8 ; CHECK-NEXT: %[[V:.+]] = load i32, i32* getelementptr inbounds (%struct.Q, %struct.Q* @_q, i64 0, i32 0)
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9 ; CHECK-NEXT: ret i32 %[[V]]
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10
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11 source_filename = "main.cpp"
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12 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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13 target triple = "x86_64-none-linux-gnu"
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14
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15 %struct.Q = type { i32 }
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16
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17 $_ZN1QC2Ev = comdat any
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18
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19 @_q = dso_local global %struct.Q zeroinitializer, align 4
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20 @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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21
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22 define internal void @__cxx_global_var_init() section ".text.startup" {
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23 call void @_ZN1QC2Ev(%struct.Q* @_q)
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24 ret void
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25 }
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26
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27 define linkonce_odr dso_local void @_ZN1QC2Ev(%struct.Q*) unnamed_addr #1 comdat align 2 {
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28 %2 = alloca %struct.Q*, align 8
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29 store %struct.Q* %0, %struct.Q** %2, align 8
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30 %3 = load %struct.Q*, %struct.Q** %2, align 8
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31 %4 = getelementptr inbounds %struct.Q, %struct.Q* %3, i32 0, i32 0
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32 %5 = call i32 bitcast (float (float, float)* @fmodf to i32 (float, float)*)(float 0x40091EB860000000, float 2.000000e+00)
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33 store i32 %5, i32* %4, align 4
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34 ret void
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35 }
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36
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37 define dso_local i32 @main(i32, i8**) {
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38 %3 = alloca i32, align 4
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39 %4 = alloca i32, align 4
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40 %5 = alloca i8**, align 8
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41 store i32 0, i32* %3, align 4
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42 store i32 %0, i32* %4, align 4
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43 store i8** %1, i8*** %5, align 8
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44 %6 = load i32, i32* getelementptr inbounds (%struct.Q, %struct.Q* @_q, i32 0, i32 0), align 4
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45 ret i32 %6
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46 }
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47
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48 ; Function Attrs: nounwind
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49 declare dso_local float @fmodf(float, float)
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50
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51 ; Function Attrs: noinline uwtable
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52 define internal void @_GLOBAL__sub_I_main.cpp() section ".text.startup" {
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53 call void @__cxx_global_var_init()
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54 ret void
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55 }
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