433e8d3e04
This patch changes all i32 constant in store instruction to i64 with truncation, to increase the chance that the referenced constant can be shared with other i64 constant. Differential Revision: https://reviews.llvm.org/D39352 llvm-svn: 318436
45 lines
1.3 KiB
LLVM
45 lines
1.3 KiB
LLVM
; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr8 -verify-machineinstrs | FileCheck %s
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; Test the same constant can be used by different stores.
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%struct.S = type { i64, i8, i16, i32 }
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define void @foo(%struct.S* %p) {
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%l4 = bitcast %struct.S* %p to i64*
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store i64 0, i64* %l4, align 8
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%c = getelementptr %struct.S, %struct.S* %p, i64 0, i32 1
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store i8 0, i8* %c, align 8
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%s = getelementptr %struct.S, %struct.S* %p, i64 0, i32 2
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store i16 0, i16* %s, align 2
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%i = getelementptr %struct.S, %struct.S* %p, i64 0, i32 3
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store i32 0, i32* %i, align 4
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ret void
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; CHECK-LABEL: @foo
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; CHECK: li 4, 0
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; CHECK: stb 4, 8(3)
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; CHECK: std 4, 0(3)
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; CHECK: sth 4, 10(3)
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; CHECK: stw 4, 12(3)
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}
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define void @bar(%struct.S* %p) {
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%i = getelementptr %struct.S, %struct.S* %p, i64 0, i32 3
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store i32 2, i32* %i, align 4
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%s = getelementptr %struct.S, %struct.S* %p, i64 0, i32 2
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store i16 2, i16* %s, align 2
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%c = getelementptr %struct.S, %struct.S* %p, i64 0, i32 1
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store i8 2, i8* %c, align 8
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%l4 = bitcast %struct.S* %p to i64*
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store i64 2, i64* %l4, align 8
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ret void
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; CHECK-LABEL: @bar
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; CHECK: li 4, 2
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; CHECK: stw 4, 12(3)
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; CHECK: sth 4, 10(3)
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; CHECK: std 4, 0(3)
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; CHECK: stb 4, 8(3)
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}
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