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Hexagon: Test case to confirm generation of indexed loads with zero offset.

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llvm-svn: 174196
This commit is contained in:
Jyotsna Verma 2013-02-01 16:40:06 +00:00
parent 460af8cdc9
commit 5e4467cefa
1 changed files with 70 additions and 0 deletions
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70
test/CodeGen/Hexagon/idxload-with-zero-offset.ll Normal file
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; RUN: llc -march=hexagon -mcpu=hexagonv4 < %s | FileCheck %s
; Check that we generate load instruction with (base + register offset << 0)
; load word
define i32 @load_w(i32* nocapture %a, i32 %n) nounwind {
; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memw(r{{[0-9]+}}+r{{[0-9]+}}<<#0)
entry:
%tmp = shl i32 %n, 4
%scevgep9 = getelementptr i32* %a, i32 %tmp
%val = load i32* %scevgep9, align 4
ret i32 %val
}
; load unsigned half word
define i16 @load_uh(i16* nocapture %a, i32 %n) nounwind {
; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memuh(r{{[0-9]+}}+r{{[0-9]+}}<<#0)
entry:
%tmp = shl i32 %n, 4
%scevgep9 = getelementptr i16* %a, i32 %tmp
%val = load i16* %scevgep9, align 2
ret i16 %val
}
; load signed half word
define i32 @load_h(i16* nocapture %a, i32 %n) nounwind {
; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memh(r{{[0-9]+}}+r{{[0-9]+}}<<#0)
entry:
%tmp = shl i32 %n, 4
%scevgep9 = getelementptr i16* %a, i32 %tmp
%val = load i16* %scevgep9, align 2
%conv = sext i16 %val to i32
ret i32 %conv
}
; load unsigned byte
define i8 @load_ub(i8* nocapture %a, i32 %n) nounwind {
; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memub(r{{[0-9]+}}+r{{[0-9]+}}<<#0)
entry:
%tmp = shl i32 %n, 4
%scevgep9 = getelementptr i8* %a, i32 %tmp
%val = load i8* %scevgep9, align 1
ret i8 %val
}
; load signed byte
define i32 @foo_2(i8* nocapture %a, i32 %n) nounwind {
; CHECK: r{{[0-9]+}}{{ *}}={{ *}}memb(r{{[0-9]+}}+r{{[0-9]+}}<<#0)
entry:
%tmp = shl i32 %n, 4
%scevgep9 = getelementptr i8* %a, i32 %tmp
%val = load i8* %scevgep9, align 1
%conv = sext i8 %val to i32
ret i32 %conv
}
; load doubleword
define i64 @load_d(i64* nocapture %a, i32 %n) nounwind {
; CHECK: r{{[0-9]+}}:{{[0-9]+}}{{ *}}={{ *}}memd(r{{[0-9]+}}+r{{[0-9]+}}<<#0)
entry:
%tmp = shl i32 %n, 4
%scevgep9 = getelementptr i64* %a, i32 %tmp
%val = load i64* %scevgep9, align 8
ret i64 %val
}