a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
29 lines
896 B
LLVM
29 lines
896 B
LLVM
; Test that CodeGenPrepare respects endianness when splitting a store.
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;
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; RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -stop-after codegenprepare -force-split-store < %s | FileCheck %s
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define void @fun(ptr %Src, ptr %Dst) {
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; CHECK-LABEL: @fun(
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; CHECK: %1 = load i16, ptr %Src
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; CHECK-NEXT: %2 = trunc i16 %1 to i8
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; CHECK-NEXT: %3 = lshr i16 %1, 8
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; CHECK-NEXT: %4 = trunc i16 %3 to i8
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; CHECK-NEXT: %5 = zext i8 %2 to i16
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; CHECK-NEXT: %6 = zext i8 %4 to i16
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; CHECK-NEXT: %7 = shl nuw i16 %6, 8
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; CHECK-NEXT: %8 = or i16 %7, %5
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; CHECK-NEXT: %9 = getelementptr i8, ptr %Dst, i32 1
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; CHECK-NEXT: store i8 %2, ptr %9
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; CHECK-NEXT: store i8 %4, ptr %Dst
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%1 = load i16, ptr %Src
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%2 = trunc i16 %1 to i8
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%3 = lshr i16 %1, 8
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%4 = trunc i16 %3 to i8
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%5 = zext i8 %2 to i16
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%6 = zext i8 %4 to i16
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%7 = shl nuw i16 %6, 8
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%8 = or i16 %7, %5
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store i16 %8, ptr %Dst
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ret void
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}
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