b19194c032
Remove the known limitation of the library function call folders to only work with top-level arrays of characters (as per the TODO comment in the code) and allows them to also fold calls involving subobjects of constant aggregates such as member arrays.
55 lines
1.7 KiB
LLVM
55 lines
1.7 KiB
LLVM
; RUN: llc < %s -march=bpfel -verify-machineinstrs | FileCheck %s
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; RUN: llc < %s -march=bpfeb -verify-machineinstrs | FileCheck %s
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; Source code:
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; struct test_t1 {
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; char a;
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; int b;
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; };
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; struct test_t2 {
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; char a, b;
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; struct test_t1 c[2];
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; int d[2];
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; int e;
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; };
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; struct test_t2 g;
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; int test()
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; {
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; struct test_t2 t2 = {.c = {{}, {.b = 1}}, .d = {2, 3}};
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; g = t2;
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; return 0;
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; }
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%struct.test_t2 = type { i8, i8, [2 x %struct.test_t1], [2 x i32], i32 }
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%struct.test_t1 = type { i8, i32 }
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@test.t2 = private unnamed_addr constant %struct.test_t2 { i8 0, i8 0, [2 x %struct.test_t1] [%struct.test_t1 zeroinitializer, %struct.test_t1 { i8 0, i32 1 }], [2 x i32] [i32 2, i32 3], i32 0 }, align 4
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@g = common local_unnamed_addr global %struct.test_t2 zeroinitializer, align 4
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; Function Attrs: nounwind
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define i32 @test() local_unnamed_addr #0 {
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; CHECK-LABEL: test:
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entry:
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tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 getelementptr inbounds (%struct.test_t2, %struct.test_t2* @g, i64 0, i32 0), i8* align 4 getelementptr inbounds (%struct.test_t2, %struct.test_t2* @test.t2, i64 0, i32 0), i64 32, i1 false)
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; CHECK: r1 = g ll
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; CHECK: r2 = 3
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; CHECK: *(u32 *)(r1 + 24) = r2
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; CHECK: r2 = 2
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; CHECK: *(u32 *)(r1 + 20) = r2
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; CHECK: r2 = 1
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; CHECK: *(u32 *)(r1 + 16) = r2
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; CHECK: r2 = 0
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; CHECK: *(u32 *)(r1 + 28) = r2
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; CHECK: *(u32 *)(r1 + 8) = r2
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; CHECK: *(u32 *)(r1 + 4) = r2
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; CHECK: *(u32 *)(r1 + 0) = r2
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ret i32 0
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}
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; CHECK: .section .rodata.cst32,"aM",@progbits,32
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1) #1
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attributes #0 = { nounwind }
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attributes #1 = { argmemonly nounwind }
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