18c8ed5416
One of the cases identified in PR45116 - we don't need to limit store narrowing to ABI alignment, we can use allowsMemoryAccess - which tests using getABITypeAlign, but also checks if a target permits (fast) misaligned memory access by checking allowsMisalignedMemoryAccesses as a fallback.
42 lines
1.5 KiB
LLVM
42 lines
1.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s
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%struct.bf = type { i64, i16, i16, i32 }
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@bfi = common dso_local global %struct.bf zeroinitializer, align 16
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define dso_local void @t1() nounwind optsize ssp {
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; CHECK-LABEL: t1:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: orb $1, bfi+10(%rip)
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; CHECK-NEXT: retq
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entry:
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%0 = load i32, i32* bitcast (i16* getelementptr (%struct.bf, %struct.bf* @bfi, i32 0, i32 1) to i32*), align 8
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%1 = or i32 %0, 65536
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store i32 %1, i32* bitcast (i16* getelementptr (%struct.bf, %struct.bf* @bfi, i32 0, i32 1) to i32*), align 8
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ret void
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}
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define dso_local void @t1_noalign() nounwind optsize ssp {
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; CHECK-LABEL: t1_noalign:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: orb $1, bfi+10(%rip)
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; CHECK-NEXT: retq
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entry:
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%0 = load i32, i32* bitcast (i16* getelementptr (%struct.bf, %struct.bf* @bfi, i32 0, i32 1) to i32*), align 1
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%1 = or i32 %0, 65536
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store i32 %1, i32* bitcast (i16* getelementptr (%struct.bf, %struct.bf* @bfi, i32 0, i32 1) to i32*), align 1
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ret void
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}
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define dso_local void @t2() nounwind optsize ssp {
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; CHECK-LABEL: t2:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: orl $16842752, bfi+8(%rip) # imm = 0x1010000
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; CHECK-NEXT: retq
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entry:
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%0 = load i32, i32* bitcast (i16* getelementptr (%struct.bf, %struct.bf* @bfi, i32 0, i32 1) to i32*), align 8
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%1 = or i32 %0, 16842752
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store i32 %1, i32* bitcast (i16* getelementptr (%struct.bf, %struct.bf* @bfi, i32 0, i32 1) to i32*), align 8
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ret void
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}
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