62 lines
2.4 KiB
Text
62 lines
2.4 KiB
Text
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -run-pass=peephole-opt -mtriple=x86_64-- %s -o - | FileCheck %s
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# Linkers may change `addq xx@GOTTPOFF, %reg` to `leaq OFFSET(%reg), %reg`,
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# so we must not depend upon the EFLAGS output. Verify that the TEST
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# instruction won't be folded into the ADD.
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# NOTE: the IR will no longer actually produce the input MIR after
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# llvm.threadlocal.address intrinsic is annotated as having a nonnull
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# result.
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--- |
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@x = external thread_local(initialexec) global i32, align 4
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define i32 @foo() {
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%1 = tail call ptr @llvm.threadlocal.address.p0(ptr nonnull @x)
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%cmp = icmp eq ptr %1, null
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%zext = zext i1 %cmp to i32
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ret i32 %zext
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}
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; Function Attrs: nocallback nofree nosync nounwind readnone speculatable willreturn
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declare nonnull ptr @llvm.threadlocal.address.p0(ptr nonnull) #0
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attributes #0 = { nocallback nofree nosync nounwind readnone speculatable willreturn }
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...
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---
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name: foo
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alignment: 16
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tracksRegLiveness: true
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registers:
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- { id: 0, class: gr64 }
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- { id: 1, class: gr64 }
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- { id: 2, class: gr8 }
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- { id: 3, class: gr32 }
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frameInfo:
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maxAlignment: 1
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machineFunctionInfo: {}
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body: |
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bb.0 (%ir-block.0):
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; CHECK-LABEL: name: foo
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; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm $noreg, 1, $noreg, 0, $fs :: (load (s64) from `ptr addrspace(257) null`, addrspace 257)
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; CHECK-NEXT: [[ADD64rm:%[0-9]+]]:gr64 = ADD64rm [[MOV64rm]], $rip, 1, $noreg, target-flags(x86-gottpoff) @x, $noreg, implicit-def dead $eflags :: (load (s64) from got)
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; CHECK-NEXT: TEST64rr [[ADD64rm]], [[ADD64rm]], implicit-def $eflags
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; CHECK-NEXT: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 4, implicit $eflags
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; CHECK-NEXT: [[MOVZX32rr8_:%[0-9]+]]:gr32 = MOVZX32rr8 killed [[SETCCr]]
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; CHECK-NEXT: $eax = COPY [[MOVZX32rr8_]]
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; CHECK-NEXT: RET 0, $eax
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%0:gr64 = MOV64rm $noreg, 1, $noreg, 0, $fs :: (load (s64) from `ptr addrspace(257) null`, addrspace 257)
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%1:gr64 = ADD64rm %0, $rip, 1, $noreg, target-flags(x86-gottpoff) @x, $noreg, implicit-def dead $eflags :: (load (s64) from got)
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TEST64rr %1, %1, implicit-def $eflags
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%2:gr8 = SETCCr 4, implicit $eflags
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%3:gr32 = MOVZX32rr8 killed %2
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$eax = COPY %3
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RET 0, $eax
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...
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