mirror of
https://github.com/c64scene-ar/llvm-6502.git
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fba4d82671
The transform is somewhat involved, but the basic idea is simple: find derived pointers that have been offset from the base pointer using gep and replace the relocate of the derived pointer with a gep to the relocated base pointer (with the same offset). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226060 91177308-0d34-0410-b5e6-96231b3b80d8
89 lines
4.3 KiB
LLVM
89 lines
4.3 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) {
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; CHECK: getelementptr i32* %base, i32 15
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; CHECK: getelementptr i32* %base-new, i32 15
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entry:
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%ptr = getelementptr i32* %base, i32 15
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%tok = call i32 (i1 ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_i1f(i1 ()* @return_i1, i32 0, i32 0, i32 0, i32* %base, i32* %ptr)
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%base-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 4)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 5)
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%ret = load 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) {
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; CHECK: getelementptr i32* %base, i32 15
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; CHECK: getelementptr i32* %base, i32 12
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; CHECK: getelementptr i32* %base-new, i32 15
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; CHECK: getelementptr i32* %base-new, i32 12
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entry:
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%ptr = getelementptr i32* %base, i32 15
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%ptr2 = getelementptr i32* %base, i32 12
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%tok = call i32 (i1 ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_i1f(i1 ()* @return_i1, 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(i32 %tok, i32 4, i32 4)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 5)
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%ptr2-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 6)
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%ret = load 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) {
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; CHECK: getelementptr i32* %base, i32 15
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; CHECK: getelementptr i32* %base-new, i32 15
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entry:
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%ptr = getelementptr i32* %base, i32 15
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%tok = call i32 (i1 ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_i1f(i1 ()* @return_i1, i32 0, i32 0, i32 0, i32* %base, i32* %ptr)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 5)
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%base-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 4)
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%ret = load 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) {
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; CHECK: getelementptr [3 x i32]* %base, i32 0, i32 2
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; CHECK: getelementptr [3 x i32]* %base-new, i32 0, i32 2
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entry:
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%ptr = getelementptr [3 x i32]* %base, i32 0, i32 2
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%tok = call i32 (i1 ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_i1f(i1 ()* @return_i1, 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(i32 %tok, i32 4, i32 4)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 5)
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%ret = load 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) {
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; CHECK: getelementptr [3 x i32]* %base, i32 0, i32 21
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; CHECK-NOT: getelementptr [3 x i32]* %base-new, i32 0, i32 21
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entry:
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%ptr = getelementptr [3 x i32]* %base, i32 0, i32 21
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%tok = call i32 (i1 ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_i1f(i1 ()* @return_i1, 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(i32 %tok, i32 4, i32 4)
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%ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 5)
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%ret = load 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) {
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; CHECK: getelementptr i32* %base, i32 15
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; CHECK: call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 5)
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; CHECK: call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 6)
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entry:
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%ptr = getelementptr i32* %base, i32 15
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%ptr2 = getelementptr i32* %base, i32 12
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%tok = call i32 (i1 ()*, i32, i32, ...)* @llvm.experimental.gc.statepoint.p0f_i1f(i1 ()* @return_i1, 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(i32 %tok, i32 4, i32 5)
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%ptr2-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 4, i32 6)
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%ret = load i32* %ptr-new
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ret i32 %ret
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}
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declare i32 @llvm.experimental.gc.statepoint.p0f_i1f(i1 ()*, i32, i32, ...)
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declare i32* @llvm.experimental.gc.relocate.p0i32(i32, i32, i32)
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declare [3 x i32]* @llvm.experimental.gc.relocate.p0a3i32(i32, i32, i32)
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