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c0b2c10e9f
Set the default processor version to v68 when the user does not specify one in the command line. This includes changes in the LLVM backed and linker (lld). Since lld normally sets the version based on inputs, this change will only affect cases when there are no inputs. Fixes #127558
39 lines
1.6 KiB
LLVM
39 lines
1.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --include-generated-funcs --version 4
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; RUN: llc -mtriple hexagon-- -o - %s | FileCheck %s
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; Reproducer for https://github.com/llvm/llvm-project/issues/89060
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; Problem was a bug in argument copy elison. Given that the %alloca is
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; eliminated, the same frame index will be used for accessing %alloca and %a
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; on the fixed stack. Care must be taken when setting up
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; MachinePointerInfo/MemOperands for those accesses to either make sure that
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; we always refer to the fixed stack slot the same way (not using the
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; ir.alloca name), or make sure that we still detect that they alias each
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; other if using different kinds of MemOperands to identify the same fixed
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; stack entry.
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define i32 @f(i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 %q1, i32 %a, i32 %q2) {
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%alloca = alloca i32
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store i32 %a, ptr %alloca ; Should be elided.
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store i32 666, ptr %alloca
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%x = sub i32 %q1, %q2
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%y = xor i32 %x, %a ; Results in a load of %a from fixed stack.
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; Using same frame index as elided %alloca.
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ret i32 %y
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}
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; CHECK-LABEL: f:
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; CHECK: .cfi_startproc
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; CHECK-NEXT: // %bb.0:
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; CHECK-NEXT: {
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; CHECK-NEXT: r0 = memw(r29+#36)
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; CHECK-NEXT: r1 = memw(r29+#28)
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: r0 = sub(r1,r0)
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; CHECK-NEXT: r2 = memw(r29+#32)
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; CHECK-NEXT: memw(r29+#32) = ##666
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; CHECK-EMPTY:
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; CHECK-NEXT: } :mem_noshuf
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; CHECK-NEXT: {
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; CHECK-NEXT: r0 = xor(r0,r2)
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; CHECK-NEXT: jumpr r31
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; CHECK-NEXT: }
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