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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -instcombine-max-iterations=1 -S | FileCheck %s
; These tests check the optimizations specific to
; pointers being relocated at a statepoint.
declare void @func()
define i1 @test_null(i1 %cond) gc "statepoint-example" {
; CHECK-LABEL: @test_null(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: right:
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: left:
; CHECK-NEXT: [[SAFEPOINT_TOKEN:%.*]] = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: [[SAFEPOINT_TOKEN2:%.*]] = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
; CHECK-NEXT: ret i1 true
;
entry:
br i1 %cond, label %left, label %right
right:
br label %merge
left:
%safepoint_token = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* null)]
%pnew = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 0)
br label %merge
merge:
%pnew_phi = phi i32* [null, %right], [%pnew, %left]
%safepoint_token2 = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* %pnew_phi)]
%pnew2 = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token2, i32 0, i32 0)
%cmp = icmp eq i32* %pnew2, null
ret i1 %cmp
}
define i32* @test_undef(i1 %cond) gc "statepoint-example" {
; CHECK-LABEL: @test_undef(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
; CHECK: right:
; CHECK-NEXT: br label [[MERGE:%.*]]
; CHECK: left:
; CHECK-NEXT: [[SAFEPOINT_TOKEN:%.*]] = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
; CHECK-NEXT: br label [[MERGE]]
; CHECK: merge:
; CHECK-NEXT: [[SAFEPOINT_TOKEN2:%.*]] = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* nonnull @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
; CHECK-NEXT: ret i32* undef
;
entry:
br i1 %cond, label %left, label %right
right:
br label %merge
left:
%safepoint_token = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* undef)]
%pnew = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token, i32 0, i32 0)
br label %merge
merge:
%pnew_phi = phi i32* [undef, %right], [%pnew, %left]
%safepoint_token2 = tail call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (i32* %pnew_phi)]
%pnew2 = call i32* @llvm.experimental.gc.relocate.p1i32(token %safepoint_token2, i32 0, i32 0)
ret i32* %pnew2
}
declare token @llvm.experimental.gc.statepoint.p0f_isVoidf(i64, i32, void ()*, i32, i32, ...)
declare i32* @llvm.experimental.gc.relocate.p1i32(token, i32, i32)
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