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llvm-mirror/test/CodeGen/X86/backpropmask.ll
Roman Lebedev 18451cc4a4 [NFC][X86][Codegen] Megacommit: mass-regenerate all check lines that were already autogenerated
The motivation is that the update script has at least two deviations
(`<...>@GOT`/`<...>@PLT`/ and not hiding pointer arithmetics) from
what pretty much all the checklines were generated with,
and most of the tests are still not updated, so each time one of the
non-up-to-date tests is updated to see the effect of the code change,
there is a lot of noise. Instead of having to deal with that each
time, let's just deal with everything at once.

This has been done via:
```
cd llvm-project/llvm/test/CodeGen/X86
grep -rl "; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py" | xargs -L1 <...>/llvm-project/llvm/utils/update_llc_test_checks.py --llc-binary <...>/llvm-project/build/bin/llc
```

Not all tests were regenerated, however.
2021-06-11 23:57:02 +03:00

52 lines
1.6 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
; Verify that backwards propagation of a mask does not affect
; nodes with multiple result values. In both tests, the stored
; 32-bit value should be masked to an 8-bit number (and 255).
@b = dso_local local_unnamed_addr global i32 918, align 4
@d = dso_local local_unnamed_addr global i32 8089, align 4
@c = common dso_local local_unnamed_addr global i32 0, align 4
@a = common dso_local local_unnamed_addr global i32 0, align 4
define dso_local void @PR37667() {
; CHECK-LABEL: PR37667:
; CHECK: # %bb.0:
; CHECK-NEXT: movl b(%rip), %eax
; CHECK-NEXT: xorl %edx, %edx
; CHECK-NEXT: divl d(%rip)
; CHECK-NEXT: orl c(%rip), %edx
; CHECK-NEXT: movzbl %dl, %eax
; CHECK-NEXT: movl %eax, a(%rip)
; CHECK-NEXT: retq
%t0 = load i32, i32* @c, align 4
%t1 = load i32, i32* @b, align 4
%t2 = load i32, i32* @d, align 4
%rem = urem i32 %t1, %t2
%or = or i32 %rem, %t0
%conv1 = and i32 %or, 255
store i32 %conv1, i32* @a, align 4
ret void
}
define dso_local void @PR37060() {
; CHECK-LABEL: PR37060:
; CHECK: # %bb.0:
; CHECK-NEXT: movl $-1, %eax
; CHECK-NEXT: cltd
; CHECK-NEXT: idivl c(%rip)
; CHECK-NEXT: xorl b(%rip), %edx
; CHECK-NEXT: movzbl %dl, %eax
; CHECK-NEXT: movl %eax, a(%rip)
; CHECK-NEXT: retq
%t0 = load i32, i32* @c, align 4
%rem = srem i32 -1, %t0
%t2 = load i32, i32* @b, align 4
%xor = xor i32 %t2, %rem
%conv3 = and i32 %xor, 255
store i32 %conv3, i32* @a, align 4
ret void
}