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https://github.com/c64scene-ar/llvm-6502.git
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53 lines
2.1 KiB
LLVM
53 lines
2.1 KiB
LLVM
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; RUN: opt < %s -instcombine -S | FileCheck %s
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; These tests check the optimizations specific to
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; pointers being relocated at a statepoint.
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declare void @func()
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define i1 @test_negative(i32 addrspace(1)* %p) {
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entry:
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%safepoint_token = tail call i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @func, i32 0, i32 0, i32 0, i32 addrspace(1)* %p)
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%pnew = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(i32 %safepoint_token, i32 4, i32 4)
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%cmp = icmp eq i32 addrspace(1)* %pnew, null
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ret i1 %cmp
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; CHECK-LABEL: test_negative
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; CHECK: %pnew = call i32 addrspace(1)*
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; CHECK: ret i1 %cmp
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}
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define i1 @test_nonnull(i32 addrspace(1)* nonnull %p) {
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entry:
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%safepoint_token = tail call i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @func, i32 0, i32 0, i32 0, i32 addrspace(1)* %p)
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%pnew = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(i32 %safepoint_token, i32 4, i32 4)
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%cmp = icmp eq i32 addrspace(1)* %pnew, null
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ret i1 %cmp
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; CHECK-LABEL: test_nonnull
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; CHECK: ret i1 false
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}
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define i1 @test_null() {
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entry:
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%safepoint_token = tail call i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @func, i32 0, i32 0, i32 0, i32 addrspace(1)* null)
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%pnew = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(i32 %safepoint_token, i32 4, i32 4)
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%cmp = icmp eq i32 addrspace(1)* %pnew, null
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ret i1 %cmp
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; CHECK-LABEL: test_null
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; CHECK-NOT: %pnew
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; CHECK: ret i1 true
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}
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define i1 @test_undef() {
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entry:
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%safepoint_token = tail call i32 (void ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()* @func, i32 0, i32 0, i32 0, i32 addrspace(1)* undef)
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%pnew = call i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(i32 %safepoint_token, i32 4, i32 4)
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%cmp = icmp eq i32 addrspace(1)* %pnew, null
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ret i1 %cmp
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; CHECK-LABEL: test_undef
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; CHECK-NOT: %pnew
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; CHECK: ret i1 undef
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}
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declare i32 @llvm.experimental.gc.statepoint.p0f_isVoidf(void ()*, i32, i32, ...)
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declare i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(i32, i32, i32) #3
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