105 lines
4.3 KiB
LLVM
105 lines
4.3 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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; RUN: llc -o - -verify-machineinstrs -O0 -global-isel -stop-after=localizer %s | FileCheck %s
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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target triple = "arm64-apple-ios5.0.0"
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@var1 = common global i32 0, align 4
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@var2 = common global i32 0, align 4
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@var3 = common global i32 0, align 4
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@var4 = common global i32 0, align 4
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; This is an ll test instead of MIR because -run-pass doesn't seem to support
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; initializing the target TTI which we need for this test.
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; Some of the instructions in entry block are dead after this pass so don't
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; strictly need to be checked for.
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define i32 @foo() {
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; CHECK-LABEL: name: foo
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; CHECK: bb.1.entry:
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; CHECK: successors: %bb.2(0x40000000), %bb.3(0x40000000)
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; CHECK: [[GV:%[0-9]+]]:gpr(p0) = G_GLOBAL_VALUE @var1
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; CHECK: [[C:%[0-9]+]]:gpr(s32) = G_CONSTANT i32 2
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; CHECK: [[GV1:%[0-9]+]]:gpr(p0) = G_GLOBAL_VALUE @var2
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; CHECK: [[C1:%[0-9]+]]:gpr(s32) = G_CONSTANT i32 3
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; CHECK: [[GV2:%[0-9]+]]:gpr(p0) = G_GLOBAL_VALUE @var3
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; CHECK: [[C2:%[0-9]+]]:gpr(s32) = G_CONSTANT i32 0
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; CHECK: [[LOAD:%[0-9]+]]:gpr(s32) = G_LOAD [[GV]](p0) :: (dereferenceable load 4 from @var1)
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; CHECK: [[C3:%[0-9]+]]:gpr(s32) = G_CONSTANT i32 1
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; CHECK: [[ICMP:%[0-9]+]]:gpr(s32) = G_ICMP intpred(ne), [[LOAD]](s32), [[C3]]
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; CHECK: [[TRUNC:%[0-9]+]]:gpr(s1) = G_TRUNC [[ICMP]](s32)
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; CHECK: G_BRCOND [[TRUNC]](s1), %bb.3
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; CHECK: bb.2.if.then:
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; CHECK: successors: %bb.3(0x80000000)
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; CHECK: [[GV3:%[0-9]+]]:gpr(p0) = G_GLOBAL_VALUE @var2
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; CHECK: [[C4:%[0-9]+]]:gpr(s32) = G_CONSTANT i32 2
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; CHECK: G_STORE [[C4]](s32), [[GV3]](p0) :: (store 4 into @var2)
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; CHECK: [[C5:%[0-9]+]]:gpr(s32) = G_CONSTANT i32 3
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; CHECK: G_STORE [[C5]](s32), [[GV]](p0) :: (store 4 into @var1)
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; CHECK: [[GV4:%[0-9]+]]:gpr(p0) = G_GLOBAL_VALUE @var3
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; CHECK: G_STORE [[C4]](s32), [[GV4]](p0) :: (store 4 into @var3)
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; CHECK: G_STORE [[C5]](s32), [[GV]](p0) :: (store 4 into @var1)
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; CHECK: bb.3.if.end:
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; CHECK: [[C6:%[0-9]+]]:gpr(s32) = G_CONSTANT i32 0
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; CHECK: $w0 = COPY [[C6]](s32)
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; CHECK: RET_ReallyLR implicit $w0
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entry:
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%0 = load i32, i32* @var1, align 4
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%cmp = icmp eq i32 %0, 1
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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store i32 2, i32* @var2, align 4
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store i32 3, i32* @var1, align 4
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store i32 2, i32* @var3, align 4
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store i32 3, i32* @var1, align 4
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br label %if.end
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if.end:
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ret i32 0
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}
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@tls_gv = common thread_local global i32 0, align 4
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; This test checks that we don't try to localize TLS variables on Darwin.
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; If the user happens to be inside a call sequence, we could end up rematerializing
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; below a physreg write, clobbering it (TLS accesses on Darwin need a function call).
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; For now, we check we don't localize at all. We could in theory make sure that
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; we don't localize into the middle of a call sequence instead.
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define i32 @darwin_tls() {
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; CHECK-LABEL: name: darwin_tls
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; CHECK: bb.1.entry:
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; CHECK: successors: %bb.2(0x40000000), %bb.3(0x40000000)
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; CHECK: [[GV:%[0-9]+]]:gpr(p0) = G_GLOBAL_VALUE @tls_gv
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; CHECK: [[GV1:%[0-9]+]]:gpr(p0) = G_GLOBAL_VALUE @var2
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; CHECK: [[C:%[0-9]+]]:gpr(s32) = G_CONSTANT i32 0
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; CHECK: [[GV2:%[0-9]+]]:gpr(p0) = G_GLOBAL_VALUE @var1
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; CHECK: [[LOAD:%[0-9]+]]:gpr(s32) = G_LOAD [[GV2]](p0) :: (dereferenceable load 4 from @var1)
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; CHECK: [[C1:%[0-9]+]]:gpr(s32) = G_CONSTANT i32 1
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; CHECK: [[ICMP:%[0-9]+]]:gpr(s32) = G_ICMP intpred(ne), [[LOAD]](s32), [[C1]]
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; CHECK: [[TRUNC:%[0-9]+]]:gpr(s1) = G_TRUNC [[ICMP]](s32)
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; CHECK: G_BRCOND [[TRUNC]](s1), %bb.3
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; CHECK: bb.2.if.then:
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; CHECK: successors: %bb.3(0x80000000)
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; CHECK: [[LOAD1:%[0-9]+]]:gpr(s32) = G_LOAD [[GV]](p0) :: (dereferenceable load 4 from @tls_gv)
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; CHECK: [[GV3:%[0-9]+]]:gpr(p0) = G_GLOBAL_VALUE @var2
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; CHECK: G_STORE [[LOAD1]](s32), [[GV3]](p0) :: (store 4 into @var2)
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; CHECK: bb.3.if.end:
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; CHECK: [[C2:%[0-9]+]]:gpr(s32) = G_CONSTANT i32 0
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; CHECK: $w0 = COPY [[C2]](s32)
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; CHECK: RET_ReallyLR implicit $w0
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entry:
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%0 = load i32, i32* @var1, align 4
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%cmp = icmp eq i32 %0, 1
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br i1 %cmp, label %if.then, label %if.end
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if.then:
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%tls = load i32, i32* @tls_gv, align 4
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store i32 %tls, i32* @var2, align 4
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br label %if.end
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if.end:
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ret i32 0
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}
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