8e4b0890a6
If not performing gep splits can prevent important optimizations, such as preventing the element indices / member offsets from being (partially) folded into load/store instruction immediates.
35 lines
1.0 KiB
LLVM
35 lines
1.0 KiB
LLVM
; RUN: opt --mtriple=loongarch64 -S --passes='require<profile-summary>,function(codegenprepare)' %s | FileCheck %s
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; Check that we have deterministic output
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define void @test(ptr %sp, ptr %t, i32 %n) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: %splitgep1 = getelementptr i8, ptr %t, i64 80000
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; CHECK-NEXT: %s = load ptr, ptr %sp
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; CHECK-NEXT: %splitgep = getelementptr i8, ptr %s, i64 80000
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entry:
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%s = load ptr, ptr %sp
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br label %while_cond
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while_cond:
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%phi = phi i32 [ 0, %entry ], [ %i, %while_body ]
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%gep0 = getelementptr [65536 x i32], ptr %s, i64 0, i64 20000
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%gep1 = getelementptr [65536 x i32], ptr %s, i64 0, i64 20001
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%gep2 = getelementptr [65536 x i32], ptr %t, i64 0, i64 20000
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%gep3 = getelementptr [65536 x i32], ptr %t, i64 0, i64 20001
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%cmp = icmp slt i32 %phi, %n
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br i1 %cmp, label %while_body, label %while_end
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while_body:
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%i = add i32 %phi, 1
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store i32 %i, ptr %gep0
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store i32 %phi, ptr %gep1
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store i32 %i, ptr %gep2
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store i32 %phi, ptr %gep3
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br label %while_cond
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while_end:
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ret void
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}
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