File: thumb2-ldr_ext.ll

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llvm 2.6-9.1
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; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep ldrb | count 1
; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep ldrh | count 1
; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep ldrsb | count 1
; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep ldrsh | count 1

define i32 @test1(i8* %v.pntr.s0.u1) {
    %tmp.u = load i8* %v.pntr.s0.u1
    %tmp1.s = zext i8 %tmp.u to i32
    ret i32 %tmp1.s
}

define i32 @test2(i16* %v.pntr.s0.u1) {
    %tmp.u = load i16* %v.pntr.s0.u1
    %tmp1.s = zext i16 %tmp.u to i32
    ret i32 %tmp1.s
}

define i32 @test3(i8* %v.pntr.s1.u0) {
    %tmp.s = load i8* %v.pntr.s1.u0
    %tmp1.s = sext i8 %tmp.s to i32
    ret i32 %tmp1.s
}

define i32 @test4() {
    %tmp.s = load i16* null
    %tmp1.s = sext i16 %tmp.s to i32
    ret i32 %tmp1.s
}