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https://github.com/RPCS3/llvm-mirror.git
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c60ad3e1fe
Summary: This patch changes gc.statepoint intrinsic's return type to token type instead of i32 type. Using token types could prevent LLVM to merge different gc.statepoint nodes into PHI nodes and cause further problems with gc relocations. The patch also changes the way on how gc.relocate and gc.result look for their corresponding gc.statepoint on unwind path. The current implementation uses the selector value extracted from a { i8*, i32 } landingpad as a hook to find the gc.statepoint, while the patch directly uses a token type landingpad (http://reviews.llvm.org/D15405) to find the gc.statepoint.
Reviewers: sanjoy, JosephTremoulet, pgavlin, igor-laevsky, mjacob
Subscribers: reames, mjacob, sanjoy, llvm-commits
Differential Revision: http://reviews.llvm.org/D15662
llvm-svn: 256443
128 lines
6.9 KiB
LLVM
128 lines
6.9 KiB
LLVM
; RUN: opt -codegenprepare -S < %s | FileCheck %s
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target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-linux-gnu"
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declare zeroext i1 @return_i1()
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define i32 @test_sor_basic(i32* %base) gc "statepoint-example" {
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; CHECK: getelementptr i32, i32* %base, i32 15
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; CHECK: getelementptr i32, i32* %base-new, i32 15
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entry:
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%ptr = getelementptr i32, i32* %base, i32 15
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%tok = call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32* %base, i32* %ptr)
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%base-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 7)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 8)
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%ret = load i32, i32* %ptr-new
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ret i32 %ret
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}
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define i32 @test_sor_two_derived(i32* %base) gc "statepoint-example" {
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; CHECK: getelementptr i32, i32* %base, i32 15
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; CHECK: getelementptr i32, i32* %base, i32 12
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; CHECK: getelementptr i32, i32* %base-new, i32 12
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; CHECK: getelementptr i32, i32* %base-new, i32 15
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entry:
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%ptr = getelementptr i32, i32* %base, i32 15
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%ptr2 = getelementptr i32, i32* %base, i32 12
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%tok = call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32* %base, i32* %ptr, i32* %ptr2)
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%base-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 7)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 8)
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%ptr2-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 9)
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%ret = load i32, i32* %ptr-new
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ret i32 %ret
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}
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define i32 @test_sor_ooo(i32* %base) gc "statepoint-example" {
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; CHECK: getelementptr i32, i32* %base, i32 15
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; CHECK: getelementptr i32, i32* %base-new, i32 15
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entry:
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%ptr = getelementptr i32, i32* %base, i32 15
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%tok = call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32* %base, i32* %ptr)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 8)
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%base-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 7)
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%ret = load i32, i32* %ptr-new
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ret i32 %ret
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}
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define i32 @test_sor_gep_smallint([3 x i32]* %base) gc "statepoint-example" {
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; CHECK: getelementptr [3 x i32], [3 x i32]* %base, i32 0, i32 2
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; CHECK: getelementptr [3 x i32], [3 x i32]* %base-new, i32 0, i32 2
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entry:
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%ptr = getelementptr [3 x i32], [3 x i32]* %base, i32 0, i32 2
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%tok = call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, [3 x i32]* %base, i32* %ptr)
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%base-new = call [3 x i32]* @llvm.experimental.gc.relocate.p0a3i32(token %tok, i32 7, i32 7)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 8)
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%ret = load i32, i32* %ptr-new
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ret i32 %ret
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}
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define i32 @test_sor_gep_largeint([3 x i32]* %base) gc "statepoint-example" {
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; CHECK: getelementptr [3 x i32], [3 x i32]* %base, i32 0, i32 21
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; CHECK-NOT: getelementptr [3 x i32], [3 x i32]* %base-new, i32 0, i32 21
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entry:
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%ptr = getelementptr [3 x i32], [3 x i32]* %base, i32 0, i32 21
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%tok = call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, [3 x i32]* %base, i32* %ptr)
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%base-new = call [3 x i32]* @llvm.experimental.gc.relocate.p0a3i32(token %tok, i32 7, i32 7)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 8)
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%ret = load i32, i32* %ptr-new
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ret i32 %ret
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}
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define i32 @test_sor_noop(i32* %base) gc "statepoint-example" {
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; CHECK: getelementptr i32, i32* %base, i32 15
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; CHECK: call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 8)
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; CHECK: call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 9)
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entry:
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%ptr = getelementptr i32, i32* %base, i32 15
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%ptr2 = getelementptr i32, i32* %base, i32 12
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%tok = call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32* %base, i32* %ptr, i32* %ptr2)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 8)
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%ptr2-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 9)
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%ret = load i32, i32* %ptr-new
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ret i32 %ret
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}
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define i32 @test_sor_basic_wrong_order(i32* %base) gc "statepoint-example" {
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; CHECK-LABEL: @test_sor_basic_wrong_order
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; Here we have base relocate inserted after derived. Make sure that we don't
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; produce uses of the relocated base pointer before it's definition.
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entry:
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%ptr = getelementptr i32, i32* %base, i32 15
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; CHECK: getelementptr i32, i32* %base, i32 15
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%tok = call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32* %base, i32* %ptr)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 8)
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%base-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 7)
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; CHECK: %base-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 7)
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; CHECK-NEXT: getelementptr i32, i32* %base-new, i32 15
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%ret = load i32, i32* %ptr-new
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ret i32 %ret
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}
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define i32 @test_sor_noop_cross_bb(i1 %external-cond, i32* %base) gc "statepoint-example" {
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; CHECK-LABEL: @test_sor_noop_cross_bb
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; Here base relocate doesn't dominate derived relocate. Make sure that we don't
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; produce undefined use of the relocated base pointer.
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entry:
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%ptr = getelementptr i32, i32* %base, i32 15
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; CHECK: getelementptr i32, i32* %base, i32 15
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%tok = call token (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32* %base, i32* %ptr)
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br i1 %external-cond, label %left, label %right
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left:
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 8)
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; CHECK: call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 8)
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%ret-new = load i32, i32* %ptr-new
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ret i32 %ret-new
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right:
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%ptr-base = call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 7)
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; CHECK: call i32* @llvm.experimental.gc.relocate.p0i32(token %tok, i32 7, i32 7)
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%ret-base = load i32, i32* %ptr-base
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ret i32 %ret-base
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}
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declare token @llvm.experimental.gc.statepoint.p0f_i1f(i64, i32, i1 ()*, i32, i32, ...)
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declare i32* @llvm.experimental.gc.relocate.p0i32(token, i32, i32)
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declare [3 x i32]* @llvm.experimental.gc.relocate.p0a3i32(token, i32, i32)
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