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https://github.com/c64scene-ar/llvm-6502.git
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7464cac572
We don't need to go through LSR to trigger this bug. Instead, hand-craft a tricky GEP and get the constant folder to hack on it when parsing the IR. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239017 91177308-0d34-0410-b5e6-96231b3b80d8
49 lines
2.4 KiB
LLVM
49 lines
2.4 KiB
LLVM
; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
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; RUN: verify-uselistorder %s
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; Verify that over-indexed getelementptrs are folded.
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@A = external global [2 x [3 x [5 x [7 x i32]]]]
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@B = global i32* getelementptr ([2 x [3 x [5 x [7 x i32]]]], [2 x [3 x [5 x [7 x i32]]]]* @A, i64 0, i64 0, i64 2, i64 1, i64 7523)
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; CHECK: @B = global i32* getelementptr ([2 x [3 x [5 x [7 x i32]]]], [2 x [3 x [5 x [7 x i32]]]]* @A, i64 36, i64 0, i64 1, i64 0, i64 5)
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@C = global i32* getelementptr ([2 x [3 x [5 x [7 x i32]]]], [2 x [3 x [5 x [7 x i32]]]]* @A, i64 3, i64 2, i64 0, i64 0, i64 7523)
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; CHECK: @C = global i32* getelementptr ([2 x [3 x [5 x [7 x i32]]]], [2 x [3 x [5 x [7 x i32]]]]* @A, i64 39, i64 1, i64 1, i64 4, i64 5)
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; Verify that constant expression GEPs work with i84 indices.
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@D = external global [1 x i32]
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@E = global i32* getelementptr inbounds ([1 x i32], [1 x i32]* @D, i84 0, i64 1)
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; CHECK: @E = global i32* getelementptr inbounds ([1 x i32], [1 x i32]* @D, i84 1, i64 0)
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; Verify that i16 indices work.
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@x = external global {i32, i32}
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@y = global i32* getelementptr ({ i32, i32 }, { i32, i32 }* @x, i16 42, i32 0)
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; CHECK: @y = global i32* getelementptr ({ i32, i32 }, { i32, i32 }* @x, i16 42, i32 0)
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@PR23753_a = external global i8
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@PR23753_b = global i8* getelementptr (i8, i8* @PR23753_a, i64 ptrtoint (i8* @PR23753_a to i64))
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; CHECK: @PR23753_b = global i8* getelementptr (i8, i8* @PR23753_a, i64 ptrtoint (i8* @PR23753_a to i64))
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; See if i92 indices work too.
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define i32 *@test({i32, i32}* %t, i92 %n) {
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; CHECK: @test
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; CHECK: %B = getelementptr { i32, i32 }, { i32, i32 }* %t, i92 %n, i32 0
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%B = getelementptr {i32, i32}, {i32, i32}* %t, i92 %n, i32 0
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ret i32* %B
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}
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; Verify that constant expression vector GEPs work.
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@z = global <2 x i32*> getelementptr ([3 x {i32, i32}], <2 x [3 x {i32, i32}]*> zeroinitializer, <2 x i32> <i32 1, i32 2>, <2 x i32> <i32 2, i32 3>, <2 x i32> <i32 1, i32 1>)
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; Verify that struct GEP works with a vector of pointers.
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define <2 x i32*> @test7(<2 x {i32, i32}*> %a) {
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%w = getelementptr {i32, i32}, <2 x {i32, i32}*> %a, <2 x i32> <i32 5, i32 9>, <2 x i32> zeroinitializer
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ret <2 x i32*> %w
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}
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; Verify that array GEP works with a vector of pointers.
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define <2 x i8*> @test8(<2 x [2 x i8]*> %a) {
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%w = getelementptr [2 x i8], <2 x [2 x i8]*> %a, <2 x i32> <i32 0, i32 0>, <2 x i8> <i8 0, i8 1>
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ret <2 x i8*> %w
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}
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