mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-01-23 17:32:49 +00:00
78 lines
2.4 KiB
LLVM
78 lines
2.4 KiB
LLVM
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; RUN: opt < %s -nary-reassociate -S | FileCheck %s
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target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
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target triple = "nvptx64-unknown-unknown"
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declare void @foo(float*)
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; foo(&a[i]);
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; foo(&a[i + j]);
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; =>
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; t = &a[i];
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; foo(t);
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; foo(t + j);
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define void @reassociate_gep(float* %a, i64 %i, i64 %j) {
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; CHECK-LABEL: @reassociate_gep(
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%1 = add i64 %i, %j
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%2 = getelementptr float, float* %a, i64 %i
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; CHECK: [[t1:[^ ]+]] = getelementptr float, float* %a, i64 %i
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call void @foo(float* %2)
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; CHECK: call void @foo(float* [[t1]])
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%3 = getelementptr float, float* %a, i64 %1
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; CHECK: [[t2:[^ ]+]] = getelementptr float, float* [[t1]], i64 %j
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call void @foo(float* %3)
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; CHECK: call void @foo(float* [[t2]])
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ret void
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}
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; foo(&a[sext(j)]);
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; foo(&a[sext(i +nsw j)]);
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; =>
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; t = &a[sext(j)];
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; foo(t);
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; foo(t + sext(i));
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define void @reassociate_gep_nsw(float* %a, i32 %i, i32 %j) {
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; CHECK-LABEL: @reassociate_gep_nsw(
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%1 = add nsw i32 %i, %j
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%idxprom.1 = sext i32 %1 to i64
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%idxprom.j = sext i32 %j to i64
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%2 = getelementptr float, float* %a, i64 %idxprom.j
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; CHECK: [[t1:[^ ]+]] = getelementptr float, float* %a, i64 %idxprom.j
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call void @foo(float* %2)
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; CHECK: call void @foo(float* [[t1]])
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%3 = getelementptr float, float* %a, i64 %idxprom.1
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; CHECK: [[sexti:[^ ]+]] = sext i32 %i to i64
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; CHECK: [[t2:[^ ]+]] = getelementptr float, float* [[t1]], i64 [[sexti]]
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call void @foo(float* %3)
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; CHECK: call void @foo(float* [[t2]])
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ret void
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}
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; Do not split the second GEP because sext(i + j) != sext(i) + sext(j).
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define void @reassociate_gep_no_nsw(float* %a, i32 %i, i32 %j) {
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; CHECK-LABEL: @reassociate_gep_no_nsw(
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%1 = add i32 %i, %j
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%2 = getelementptr float, float* %a, i32 %j
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; CHECK: getelementptr float, float* %a, i32 %j
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call void @foo(float* %2)
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%3 = getelementptr float, float* %a, i32 %1
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; CHECK: getelementptr float, float* %a, i32 %1
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call void @foo(float* %3)
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ret void
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}
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define void @reassociate_gep_128(float* %a, i128 %i, i128 %j) {
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; CHECK-LABEL: @reassociate_gep_128(
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%1 = add i128 %i, %j
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%2 = getelementptr float, float* %a, i128 %i
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; CHECK: [[t1:[^ ]+]] = getelementptr float, float* %a, i128 %i
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call void @foo(float* %2)
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; CHECK: call void @foo(float* [[t1]])
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%3 = getelementptr float, float* %a, i128 %1
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; CHECK: [[truncj:[^ ]+]] = trunc i128 %j to i64
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; CHECK: [[t2:[^ ]+]] = getelementptr float, float* [[t1]], i64 [[truncj]]
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call void @foo(float* %3)
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; CHECK: call void @foo(float* [[t2]])
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ret void
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}
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