54dd75f7b3
Instead of doing lots of complicated calculations to get the shortest GEP, I'll just cast it to i8*, do the GEP, and optionally cast to the requested type. This currently produces ugly constant expressions, but once LLVM switches to opaque pointer types all of this shouldn't matter anymore.
90 строки
3,4 КиБ
LLVM
90 строки
3,4 КиБ
LLVM
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64--linux"
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@main.nonConst1 = local_unnamed_addr global [4 x i64] zeroinitializer
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@main.nonConst2 = local_unnamed_addr global i64 0
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@main.someArray = global [8 x { i16, i32 }] zeroinitializer
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@main.exportedValue = global [1 x i16*] [i16* @main.exposedValue1]
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@main.exposedValue1 = global i16 0
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@main.exposedValue2 = local_unnamed_addr global i16 0
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@main.insertedValue = local_unnamed_addr global { i8, i32, { float, { i64, i16 } } } zeroinitializer
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declare void @runtime.printint64(i64) unnamed_addr
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declare void @runtime.printnl() unnamed_addr
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define void @runtime.initAll() unnamed_addr {
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entry:
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call void @runtime.printint64(i64 5)
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call void @runtime.printnl()
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%value1 = call i64 @someValue()
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store i64 %value1, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @main.nonConst1, i32 0, i32 0), align 8
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%value2 = load i64, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @main.nonConst1, i32 0, i32 0), align 8
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store i64 %value2, i64* @main.nonConst2, align 8
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call void @modifyExternal(i32* bitcast (i8* getelementptr inbounds (i8, i8* bitcast ([8 x { i16, i32 }]* @main.someArray to i8*), i32 28) to i32*))
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call void @modifyExternal(i32* bitcast ([1 x i16*]* @main.exportedValue to i32*))
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store i16 5, i16* @main.exposedValue1, align 2
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call void @modifyExternal(i32* bitcast (void ()* @willModifyGlobal to i32*))
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store i16 7, i16* @main.exposedValue2, align 2
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call void @modifyExternal(i32* bitcast (void ()* @hasInlineAsm to i32*))
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call void @runtime.printint64(i64 6)
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call void @runtime.printint64(i64 -1)
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%agg = call { i8, i32, { float, { i64, i16 } } } @nestedStruct()
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%elt.agg = extractvalue { i8, i32, { float, { i64, i16 } } } %agg, 2
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%elt.agg1 = extractvalue { float, { i64, i16 } } %elt.agg, 1
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%elt = extractvalue { i64, i16 } %elt.agg1, 0
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call void @runtime.printint64(i64 %elt)
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%agg2.agg0 = extractvalue { i8, i32, { float, { i64, i16 } } } %agg, 2
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%agg2.agg1 = extractvalue { float, { i64, i16 } } %agg2.agg0, 1
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%agg2.insertvalue2 = insertvalue { i64, i16 } %agg2.agg1, i64 5, 0
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%agg2.insertvalue1 = insertvalue { float, { i64, i16 } } %agg2.agg0, { i64, i16 } %agg2.insertvalue2, 1
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%agg2.insertvalue0 = insertvalue { i8, i32, { float, { i64, i16 } } } %agg, { float, { i64, i16 } } %agg2.insertvalue1, 2
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store { i8, i32, { float, { i64, i16 } } } %agg2.insertvalue0, { i8, i32, { float, { i64, i16 } } }* @main.insertedValue, align 8
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ret void
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}
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define void @main() unnamed_addr {
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entry:
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call void @runtime.printint64(i64 3)
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call void @runtime.printnl()
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ret void
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}
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declare i64 @someValue() local_unnamed_addr
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declare void @modifyExternal(i32*) local_unnamed_addr
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define void @willModifyGlobal() {
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entry:
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store i16 8, i16* @main.exposedValue2, align 2
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ret void
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}
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define void @hasInlineAsm() {
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entry:
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call void asm sideeffect "", ""()
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ret void
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}
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define i64 @testSwitch(i64 %val) local_unnamed_addr {
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entry:
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switch i64 %val, label %otherwise [
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i64 0, label %zero
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i64 1, label %one
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i64 2, label %two
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]
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zero: ; preds = %entry
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ret i64 5
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one: ; preds = %entry
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ret i64 6
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two: ; preds = %entry
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ret i64 7
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otherwise: ; preds = %entry
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ret i64 -1
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}
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declare { i8, i32, { float, { i64, i16 } } } @nestedStruct() local_unnamed_addr
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