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https://github.com/Gericom/teak-llvm.git
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5ffe6408ff
Summary: Much like with the previous patch (D73005) with `AssumeAlignedAttr` handling, results in mildly more readable IR, and will improve test coverage in upcoming patch. Note that in `AllocAlignAttr`'s case, there is no requirement for that alignment parameter to end up being an I-C-E. Reviewers: erichkeane, jdoerfert, hfinkel, aaron.ballman, rsmith Reviewed By: erichkeane Subscribers: cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D73006
50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
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void *my_aligned_alloc(int size, int alignment) __attribute__((assume_aligned(32), alloc_align(2)));
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// CHECK-LABEL: @t0_immediate0(
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[CALL:%.*]] = call align 32 i8* @my_aligned_alloc(i32 320, i32 16)
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// CHECK-NEXT: ret i8* [[CALL]]
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//
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void *t0_immediate0() {
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return my_aligned_alloc(320, 16);
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};
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// CHECK-LABEL: @t1_immediate1(
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[CALL:%.*]] = call align 32 i8* @my_aligned_alloc(i32 320, i32 32)
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// CHECK-NEXT: ret i8* [[CALL]]
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//
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void *t1_immediate1() {
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return my_aligned_alloc(320, 32);
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};
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// CHECK-LABEL: @t2_immediate2(
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[CALL:%.*]] = call align 64 i8* @my_aligned_alloc(i32 320, i32 64)
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// CHECK-NEXT: ret i8* [[CALL]]
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//
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void *t2_immediate2() {
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return my_aligned_alloc(320, 64);
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};
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// CHECK-LABEL: @t3_variable(
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[ALIGNMENT_ADDR:%.*]] = alloca i32, align 4
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// CHECK-NEXT: store i32 [[ALIGNMENT:%.*]], i32* [[ALIGNMENT_ADDR]], align 4
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// CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ALIGNMENT_ADDR]], align 4
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// CHECK-NEXT: [[CALL:%.*]] = call align 32 i8* @my_aligned_alloc(i32 320, i32 [[TMP0]])
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// CHECK-NEXT: [[ALIGNMENTCAST:%.*]] = zext i32 [[TMP0]] to i64
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// CHECK-NEXT: [[MASK:%.*]] = sub i64 [[ALIGNMENTCAST]], 1
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// CHECK-NEXT: [[PTRINT:%.*]] = ptrtoint i8* [[CALL]] to i64
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// CHECK-NEXT: [[MASKEDPTR:%.*]] = and i64 [[PTRINT]], [[MASK]]
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// CHECK-NEXT: [[MASKCOND:%.*]] = icmp eq i64 [[MASKEDPTR]], 0
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// CHECK-NEXT: call void @llvm.assume(i1 [[MASKCOND]])
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// CHECK-NEXT: ret i8* [[CALL]]
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//
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void *t3_variable(int alignment) {
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return my_aligned_alloc(320, alignment);
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};
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