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llvm-mirror/test/CodeGen/ARM/load.ll
David Green 1f8f3be18e [ARM] Use lrdsb for more thumb1 loads. 
Given a sextload i16, we can usually generate "ldrsh [rn. rm]". If we
don't naturally have a rn, rm addressing mode, we can either generate
"ldrh [rn, #0]; sxth" or "mov rm, #0; ldrsh [rn. rm]".

We currently generate the first, always creating a sxth. They are both
the same number of instructions, but if we generate the second then the
mov #0 will likely be CSE'd or pulled out of a loop, etc.

This adjusts the ISel patterns to do that, creating a mov instead of a
sxth.

Differential Revision: https://reviews.llvm.org/D98693
2021-03-17 15:29:02 +00:00

1035 lines
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LLVM
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; RUN: llc -mtriple=thumbv6m-eabi %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-T1
; RUN: llc -mtriple=thumbv7m-eabi %s -o - | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-T2
; Register offset
; CHECK-LABEL: ldrsb_rr
; CHECK: ldrsb r0, [r0, r1]
define i32 @ldrsb_rr(i8* %p, i32 %n) {
entry:
%arrayidx = getelementptr inbounds i8, i8* %p, i32 %n
%0 = load i8, i8* %arrayidx, align 1
%conv = sext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrsh_rr
; CHECK-T1: lsls r1, r1, #1
; CHECK-T1: ldrsh r0, [r0, r1]
; CHECK-T2: ldrsh.w r0, [r0, r1, lsl #1]
define i32 @ldrsh_rr(i16* %p, i32 %n) {
entry:
%arrayidx = getelementptr inbounds i16, i16* %p, i32 %n
%0 = load i16, i16* %arrayidx, align 2
%conv = sext i16 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrb_rr
; CHECK: ldrb r0, [r0, r1]
define i32 @ldrb_rr(i8* %p, i32 %n) {
entry:
%arrayidx = getelementptr inbounds i8, i8* %p, i32 %n
%0 = load i8, i8* %arrayidx, align 1
%conv = zext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrh_rr
; CHECK-T1: lsls r1, r1, #1
; CHECK-T1: ldrh r0, [r0, r1]
; CHECK-T2: ldrh.w r0, [r0, r1, lsl #1]
define i32 @ldrh_rr(i16* %p, i32 %n) {
entry:
%arrayidx = getelementptr inbounds i16, i16* %p, i32 %n
%0 = load i16, i16* %arrayidx, align 2
%conv = zext i16 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldr_rr
; CHECK-T1: lsls r1, r1, #2
; CHECK-T1: ldr r0, [r0, r1]
; CHECK-T2: ldr.w r0, [r0, r1, lsl #2]
define i32 @ldr_rr(i32* %p, i32 %n) {
entry:
%arrayidx = getelementptr inbounds i32, i32* %p, i32 %n
%0 = load i32, i32* %arrayidx, align 4
ret i32 %0
}
; CHECK-LABEL: strb_rr
; CHECK: strb r2, [r0, r1]
define void @strb_rr(i8* %p, i32 %n, i32 %x) {
entry:
%conv = trunc i32 %x to i8
%arrayidx = getelementptr inbounds i8, i8* %p, i32 %n
store i8 %conv, i8* %arrayidx, align 1
ret void
}
; CHECK-LABEL: strh_rr
; CHECK-T1: lsls r1, r1, #1
; CHECK-T1: strh r2, [r0, r1]
; CHECK-T2: strh.w r2, [r0, r1, lsl #1]
define void @strh_rr(i16* %p, i32 %n, i32 %x) {
entry:
%conv = trunc i32 %x to i16
%arrayidx = getelementptr inbounds i16, i16* %p, i32 %n
store i16 %conv, i16* %arrayidx, align 2
ret void
}
; CHECK-LABEL: str_rr
; CHECK-T1: lsls r1, r1, #2
; CHECK-T1: str r2, [r0, r1]
; CHECK-T2: str.w r2, [r0, r1, lsl #2]
define void @str_rr(i32* %p, i32 %n, i32 %x) {
entry:
%arrayidx = getelementptr inbounds i32, i32* %p, i32 %n
store i32 %x, i32* %arrayidx, align 4
ret void
}
; Immediate offset of zero
; CHECK-LABEL: ldrsb_ri_zero
; CHECK-T1: movs r1, #0
; CHECK-T1: ldrsb r0, [r0, r1]
; CHECK-T2: ldrsb.w r0, [r0]
define i32 @ldrsb_ri_zero(i8* %p) {
entry:
%0 = load i8, i8* %p, align 1
%conv = sext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrsh_ri_zero
; CHECK-T1: movs r1, #0
; CHECK-T1: ldrsh r0, [r0, r1]
; CHECK-T2: ldrsh.w r0, [r0]
define i32 @ldrsh_ri_zero(i16* %p) {
entry:
%0 = load i16, i16* %p, align 2
%conv = sext i16 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrb_ri_zero
; CHECK: ldrb r0, [r0]
define i32 @ldrb_ri_zero(i8* %p) {
entry:
%0 = load i8, i8* %p, align 1
%conv = zext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrh_ri_zero
; CHECK: ldrh r0, [r0]
define i32 @ldrh_ri_zero(i16* %p) {
entry:
%0 = load i16, i16* %p, align 2
%conv = zext i16 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldr_ri_zero
; CHECK: ldr r0, [r0]
define i32 @ldr_ri_zero(i32* %p) {
entry:
%0 = load i32, i32* %p, align 4
ret i32 %0
}
; CHECK-LABEL: strb_ri_zero
; CHECK: strb r1, [r0]
define void @strb_ri_zero(i8* %p, i32 %x) {
entry:
%conv = trunc i32 %x to i8
store i8 %conv, i8* %p, align 1
ret void
}
; CHECK-LABEL: strh_ri_zero
; CHECK: strh r1, [r0]
define void @strh_ri_zero(i16* %p, i32 %x) {
entry:
%conv = trunc i32 %x to i16
store i16 %conv, i16* %p, align 2
ret void
}
; CHECK-LABEL: str_ri_zero
; CHECK: str r1, [r0]
define void @str_ri_zero(i32* %p, i32 %x) {
entry:
store i32 %x, i32* %p, align 4
ret void
}
; Maximum Thumb-1 immediate offset
; CHECK-LABEL: ldrsb_ri_t1_max
; CHECK-T1: movs r1, #31
; CHECK-T1: ldrsb r0, [r0, r1]
; CHECK-T2: ldrsb.w r0, [r0, #31]
define i32 @ldrsb_ri_t1_max(i8* %p) {
entry:
%arrayidx = getelementptr inbounds i8, i8* %p, i32 31
%0 = load i8, i8* %arrayidx, align 1
%conv = sext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrsh_ri_t1_max
; CHECK-T1: movs r1, #62
; CHECK-T1: ldrsh r0, [r0, r1]
; CHECK-T2: ldrsh.w r0, [r0, #62]
define i32 @ldrsh_ri_t1_max(i16* %p) {
entry:
%arrayidx = getelementptr inbounds i16, i16* %p, i32 31
%0 = load i16, i16* %arrayidx, align 2
%conv = sext i16 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrb_ri_t1_max
; CHECK: ldrb r0, [r0, #31]
define i32 @ldrb_ri_t1_max(i8* %p) {
entry:
%arrayidx = getelementptr inbounds i8, i8* %p, i32 31
%0 = load i8, i8* %arrayidx, align 1
%conv = zext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrh_ri_t1_max
; CHECK: ldrh r0, [r0, #62]
define i32 @ldrh_ri_t1_max(i16* %p) {
entry:
%arrayidx = getelementptr inbounds i16, i16* %p, i32 31
%0 = load i16, i16* %arrayidx, align 2
%conv = zext i16 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldr_ri_t1_max
; CHECK: ldr r0, [r0, #124]
define i32 @ldr_ri_t1_max(i32* %p) {
entry:
%arrayidx = getelementptr inbounds i32, i32* %p, i32 31
%0 = load i32, i32* %arrayidx, align 4
ret i32 %0
}
; CHECK-LABEL: strb_ri_t1_max
; CHECK: strb r1, [r0, #31]
define void @strb_ri_t1_max(i8* %p, i32 %x) {
entry:
%conv = trunc i32 %x to i8
%arrayidx = getelementptr inbounds i8, i8* %p, i32 31
store i8 %conv, i8* %arrayidx, align 1
ret void
}
; CHECK-LABEL: strh_ri_t1_max
; CHECK: strh r1, [r0, #62]
define void @strh_ri_t1_max(i16* %p, i32 %x) {
entry:
%conv = trunc i32 %x to i16
%arrayidx = getelementptr inbounds i16, i16* %p, i32 31
store i16 %conv, i16* %arrayidx, align 2
ret void
}
; CHECK-LABEL: str_ri_t1_max
; CHECK: str r1, [r0, #124]
define void @str_ri_t1_max(i32* %p, i32 %x) {
entry:
%arrayidx = getelementptr inbounds i32, i32* %p, i32 31
store i32 %x, i32* %arrayidx, align 4
ret void
}
; One past maximum Thumb-1 immediate offset
; CHECK-LABEL: ldrsb_ri_t1_too_big
; CHECK-T1: movs r1, #32
; CHECK-T1: ldrsb r0, [r0, r1]
; CHECK-T2: ldrsb.w r0, [r0, #32]
define i32 @ldrsb_ri_t1_too_big(i8* %p) {
entry:
%arrayidx = getelementptr inbounds i8, i8* %p, i32 32
%0 = load i8, i8* %arrayidx, align 1
%conv = sext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrsh_ri_t1_too_big
; CHECK-T1: movs r1, #64
; CHECK-T1: ldrsh r0, [r0, r1]
; CHECK-T2: ldrsh.w r0, [r0, #64]
define i32 @ldrsh_ri_t1_too_big(i16* %p) {
entry:
%arrayidx = getelementptr inbounds i16, i16* %p, i32 32
%0 = load i16, i16* %arrayidx, align 2
%conv = sext i16 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrb_ri_t1_too_big
; CHECK-T1: movs r1, #32
; CHECK-T1: ldrb r0, [r0, r1]
; CHECK-T2: ldrb.w r0, [r0, #32]
define i32 @ldrb_ri_t1_too_big(i8* %p) {
entry:
%arrayidx = getelementptr inbounds i8, i8* %p, i32 32
%0 = load i8, i8* %arrayidx, align 1
%conv = zext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrh_ri_t1_too_big
; CHECK-T1: movs r1, #64
; CHECK-T1: ldrh r0, [r0, r1]
; CHECK-T2: ldrh.w r0, [r0, #64]
define i32 @ldrh_ri_t1_too_big(i16* %p) {
entry:
%arrayidx = getelementptr inbounds i16, i16* %p, i32 32
%0 = load i16, i16* %arrayidx, align 2
%conv = zext i16 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldr_ri_t1_too_big
; CHECK-T1: movs r1, #128
; CHECK-T1: ldr r0, [r0, r1]
; CHECK-T2: ldr.w r0, [r0, #128]
define i32 @ldr_ri_t1_too_big(i32* %p) {
entry:
%arrayidx = getelementptr inbounds i32, i32* %p, i32 32
%0 = load i32, i32* %arrayidx, align 4
ret i32 %0
}
; CHECK-LABEL: strb_ri_t1_too_big
; CHECK-T1: movs r2, #32
; CHECK-T1: strb r1, [r0, r2]
; CHECK-T2: strb.w r1, [r0, #32]
define void @strb_ri_t1_too_big(i8* %p, i32 %x) {
entry:
%conv = trunc i32 %x to i8
%arrayidx = getelementptr inbounds i8, i8* %p, i32 32
store i8 %conv, i8* %arrayidx, align 1
ret void
}
; CHECK-LABEL: strh_ri_t1_too_big
; CHECK-T1: movs r2, #64
; CHECK-T1: strh r1, [r0, r2]
; CHECK-T2: strh.w r1, [r0, #64]
define void @strh_ri_t1_too_big(i16* %p, i32 %x) {
entry:
%conv = trunc i32 %x to i16
%arrayidx = getelementptr inbounds i16, i16* %p, i32 32
store i16 %conv, i16* %arrayidx, align 2
ret void
}
; CHECK-LABEL: str_ri_t1_too_big
; CHECK-T1: movs r2, #128
; CHECK-T1: str r1, [r0, r2]
; CHECK-T2: str.w r1, [r0, #128]
define void @str_ri_t1_too_big(i32* %p, i32 %x) {
entry:
%arrayidx = getelementptr inbounds i32, i32* %p, i32 32
store i32 %x, i32* %arrayidx, align 4
ret void
}
; Maximum Thumb-2 immediate offset
; CHECK-LABEL: ldrsb_ri_t2_max
; CHECK-T1: ldr r1, .LCP
; CHECK-T1: ldrsb r0, [r0, r1]
; CHECK-T2: ldrsb.w r0, [r0, #4095]
define i32 @ldrsb_ri_t2_max(i8* %p) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4095
%0 = load i8, i8* %add.ptr, align 1
%conv = sext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrsh_ri_t2_max
; CHECK-T1: ldr r1, .LCP
; CHECK-T1: ldrsh r0, [r0, r1]
; CHECK-T2: ldrsh.w r0, [r0, #4095]
define i32 @ldrsh_ri_t2_max(i8* %p) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4095
%0 = bitcast i8* %add.ptr to i16*
%1 = load i16, i16* %0, align 2
%conv = sext i16 %1 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrb_ri_t2_max
; CHECK-T1: ldr r1, .LCP
; CHECK-T1: ldrb r0, [r0, r1]
; CHECK-T2: ldrb.w r0, [r0, #4095]
define i32 @ldrb_ri_t2_max(i8* %p) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4095
%0 = load i8, i8* %add.ptr, align 1
%conv = zext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrh_ri_t2_max
; CHECK-T1: ldr r1, .LCP
; CHECK-T1: ldrh r0, [r0, r1]
; CHECK-T2: ldrh.w r0, [r0, #4095]
define i32 @ldrh_ri_t2_max(i8* %p) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4095
%0 = bitcast i8* %add.ptr to i16*
%1 = load i16, i16* %0, align 2
%conv = zext i16 %1 to i32
ret i32 %conv
}
; CHECK-LABEL: ldr_ri_t2_max
; CHECK-T1: ldr r1, .LCP
; CHECK-T1: ldr r0, [r0, r1]
; CHECK-T2: ldr.w r0, [r0, #4095]
define i32 @ldr_ri_t2_max(i8* %p) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4095
%0 = bitcast i8* %add.ptr to i32*
%1 = load i32, i32* %0, align 4
ret i32 %1
}
; CHECK-LABEL: strb_ri_t2_max
; CHECK-T1: ldr r2, .LCP
; CHECK-T1: strb r1, [r0, r2]
; CHECK-T2: strb.w r1, [r0, #4095]
define void @strb_ri_t2_max(i8* %p, i32 %x) {
entry:
%conv = trunc i32 %x to i8
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4095
store i8 %conv, i8* %add.ptr, align 1
ret void
}
; CHECK-LABEL: strh_ri_t2_max
; CHECK-T1: ldr r2, .LCP
; CHECK-T1: strh r1, [r0, r2]
; CHECK-T2: strh.w r1, [r0, #4095]
define void @strh_ri_t2_max(i8* %p, i32 %x) {
entry:
%conv = trunc i32 %x to i16
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4095
%0 = bitcast i8* %add.ptr to i16*
store i16 %conv, i16* %0, align 2
ret void
}
; CHECK-LABEL: str_ri_t2_max
; CHECK-T1: ldr r2, .LCP
; CHECK-T1: str r1, [r0, r2]
; CHECK-T2: str.w r1, [r0, #4095]
define void @str_ri_t2_max(i8* %p, i32 %x) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4095
%0 = bitcast i8* %add.ptr to i32*
store i32 %x, i32* %0, align 4
ret void
}
; One past maximum Thumb-2 immediate offset
; CHECK-LABEL: ldrsb_ri_t2_too_big
; CHECK-T1: movs r1, #1
; CHECK-T1: lsls r1, r1, #12
; CHECK-T2: mov.w r1, #4096
; CHECK: ldrsb r0, [r0, r1]
define i32 @ldrsb_ri_t2_too_big(i8* %p) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4096
%0 = load i8, i8* %add.ptr, align 1
%conv = sext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrsh_ri_t2_too_big
; CHECK-T1: movs r1, #1
; CHECK-T1: lsls r1, r1, #12
; CHECK-T2: mov.w r1, #4096
; CHECK: ldrsh r0, [r0, r1]
define i32 @ldrsh_ri_t2_too_big(i8* %p) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4096
%0 = bitcast i8* %add.ptr to i16*
%1 = load i16, i16* %0, align 2
%conv = sext i16 %1 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrb_ri_t2_too_big
; CHECK-T1: movs r1, #1
; CHECK-T1: lsls r1, r1, #12
; CHECK-T2: mov.w r1, #4096
; CHECK: ldrb r0, [r0, r1]
define i32 @ldrb_ri_t2_too_big(i8* %p) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4096
%0 = load i8, i8* %add.ptr, align 1
%conv = zext i8 %0 to i32
ret i32 %conv
}
; CHECK-LABEL: ldrh_ri_t2_too_big
; CHECK-T1: movs r1, #1
; CHECK-T1: lsls r1, r1, #12
; CHECK-T2: mov.w r1, #4096
; CHECK: ldrh r0, [r0, r1]
define i32 @ldrh_ri_t2_too_big(i8* %p) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4096
%0 = bitcast i8* %add.ptr to i16*
%1 = load i16, i16* %0, align 2
%conv = zext i16 %1 to i32
ret i32 %conv
}
; CHECK-LABEL: ldr_ri_t2_too_big
; CHECK-T1: movs r1, #1
; CHECK-T1: lsls r1, r1, #12
; CHECK-T2: mov.w r1, #4096
; CHECK: ldr r0, [r0, r1]
define i32 @ldr_ri_t2_too_big(i8* %p) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4096
%0 = bitcast i8* %add.ptr to i32*
%1 = load i32, i32* %0, align 4
ret i32 %1
}
; CHECK-LABEL: strb_ri_t2_too_big
; CHECK-T1: movs r2, #1
; CHECK-T1: lsls r2, r2, #12
; CHECK-T2: mov.w r2, #4096
; CHECK: strb r1, [r0, r2]
define void @strb_ri_t2_too_big(i8* %p, i32 %x) {
entry:
%conv = trunc i32 %x to i8
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4096
store i8 %conv, i8* %add.ptr, align 1
ret void
}
; CHECK-LABEL: strh_ri_t2_too_big
; CHECK-T1: movs r2, #1
; CHECK-T1: lsls r2, r2, #12
; CHECK-T2: mov.w r2, #4096
; CHECK: strh r1, [r0, r2]
define void @strh_ri_t2_too_big(i8* %p, i32 %x) {
entry:
%conv = trunc i32 %x to i16
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4096
%0 = bitcast i8* %add.ptr to i16*
store i16 %conv, i16* %0, align 2
ret void
}
; CHECK-LABEL: str_ri_t2_too_big
; CHECK-T1: movs r2, #1
; CHECK-T1: lsls r2, r2, #12
; CHECK-T2: mov.w r2, #4096
; CHECK: str r1, [r0, r2]
define void @str_ri_t2_too_big(i8* %p, i32 %x) {
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 4096
%0 = bitcast i8* %add.ptr to i32*
store i32 %x, i32* %0, align 4
ret void
}
; Negative offset
define i32 @ldrsb_ri_negative(i8* %p) {
; CHECK-T1-LABEL: ldrsb_ri_negative:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r1, #0
; CHECK-T1-NEXT: mvns r1, r1
; CHECK-T1-NEXT: ldrsb r0, [r0, r1]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrsb_ri_negative:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: ldrsb r0, [r0, #-1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -1
%0 = load i8, i8* %add.ptr, align 1
%conv = sext i8 %0 to i32
ret i32 %conv
}
define i32 @ldrsh_ri_negative(i8* %p) {
; CHECK-T1-LABEL: ldrsh_ri_negative:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r1, #0
; CHECK-T1-NEXT: mvns r1, r1
; CHECK-T1-NEXT: ldrsh r0, [r0, r1]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrsh_ri_negative:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: ldrsh r0, [r0, #-1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -1
%0 = bitcast i8* %add.ptr to i16*
%1 = load i16, i16* %0, align 2
%conv = sext i16 %1 to i32
ret i32 %conv
}
define i32 @ldrb_ri_negative(i8* %p) {
; CHECK-T1-LABEL: ldrb_ri_negative:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, r0, #1
; CHECK-T1-NEXT: ldrb r0, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrb_ri_negative:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: ldrb r0, [r0, #-1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -1
%0 = load i8, i8* %add.ptr, align 1
%conv = zext i8 %0 to i32
ret i32 %conv
}
define i32 @ldrh_ri_negative(i8* %p) {
; CHECK-T1-LABEL: ldrh_ri_negative:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, r0, #1
; CHECK-T1-NEXT: ldrh r0, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrh_ri_negative:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: ldrh r0, [r0, #-1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -1
%0 = bitcast i8* %add.ptr to i16*
%1 = load i16, i16* %0, align 2
%conv = zext i16 %1 to i32
ret i32 %conv
}
define i32 @ldr_ri_negative(i8* %p) {
; CHECK-T1-LABEL: ldr_ri_negative:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, r0, #1
; CHECK-T1-NEXT: ldr r0, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldr_ri_negative:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: ldr r0, [r0, #-1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -1
%0 = bitcast i8* %add.ptr to i32*
%1 = load i32, i32* %0, align 4
ret i32 %1
}
define void @strb_ri_negative(i8* %p, i32 %x) {
; CHECK-T1-LABEL: strb_ri_negative:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, r0, #1
; CHECK-T1-NEXT: strb r1, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: strb_ri_negative:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: strb r1, [r0, #-1]
; CHECK-T2-NEXT: bx lr
entry:
%conv = trunc i32 %x to i8
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -1
store i8 %conv, i8* %add.ptr, align 1
ret void
}
define void @strh_ri_negative(i8* %p, i32 %x) {
; CHECK-T1-LABEL: strh_ri_negative:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, r0, #1
; CHECK-T1-NEXT: strh r1, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: strh_ri_negative:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: strh r1, [r0, #-1]
; CHECK-T2-NEXT: bx lr
entry:
%conv = trunc i32 %x to i16
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -1
%0 = bitcast i8* %add.ptr to i16*
store i16 %conv, i16* %0, align 2
ret void
}
define void @str_ri_negative(i8* %p, i32 %x) {
; CHECK-T1-LABEL: str_ri_negative:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, r0, #1
; CHECK-T1-NEXT: str r1, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: str_ri_negative:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: str r1, [r0, #-1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -1
%0 = bitcast i8* %add.ptr to i32*
store i32 %x, i32* %0, align 4
ret void
}
; Negative 255 offset
define i32 @ldrsb_ri_negative255(i8* %p) {
; CHECK-T1-LABEL: ldrsb_ri_negative255:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r1, #254
; CHECK-T1-NEXT: mvns r1, r1
; CHECK-T1-NEXT: ldrsb r0, [r0, r1]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrsb_ri_negative255:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: ldrsb r0, [r0, #-255]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -255
%0 = load i8, i8* %add.ptr, align 1
%conv = sext i8 %0 to i32
ret i32 %conv
}
define i32 @ldrsh_ri_negative255(i8* %p) {
; CHECK-T1-LABEL: ldrsh_ri_negative255:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r1, #254
; CHECK-T1-NEXT: mvns r1, r1
; CHECK-T1-NEXT: ldrsh r0, [r0, r1]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrsh_ri_negative255:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: ldrsh r0, [r0, #-255]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -255
%0 = bitcast i8* %add.ptr to i16*
%1 = load i16, i16* %0, align 2
%conv = sext i16 %1 to i32
ret i32 %conv
}
define i32 @ldrb_ri_negative255(i8* %p) {
; CHECK-T1-LABEL: ldrb_ri_negative255:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, #255
; CHECK-T1-NEXT: ldrb r0, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrb_ri_negative255:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: ldrb r0, [r0, #-255]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -255
%0 = load i8, i8* %add.ptr, align 1
%conv = zext i8 %0 to i32
ret i32 %conv
}
define i32 @ldrh_ri_negative255(i8* %p) {
; CHECK-T1-LABEL: ldrh_ri_negative255:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, #255
; CHECK-T1-NEXT: ldrh r0, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrh_ri_negative255:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: ldrh r0, [r0, #-255]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -255
%0 = bitcast i8* %add.ptr to i16*
%1 = load i16, i16* %0, align 2
%conv = zext i16 %1 to i32
ret i32 %conv
}
define i32 @ldr_ri_negative255(i8* %p) {
; CHECK-T1-LABEL: ldr_ri_negative255:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, #255
; CHECK-T1-NEXT: ldr r0, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldr_ri_negative255:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: ldr r0, [r0, #-255]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -255
%0 = bitcast i8* %add.ptr to i32*
%1 = load i32, i32* %0, align 4
ret i32 %1
}
define void @strb_ri_negative255(i8* %p, i32 %x) {
; CHECK-T1-LABEL: strb_ri_negative255:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, #255
; CHECK-T1-NEXT: strb r1, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: strb_ri_negative255:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: strb r1, [r0, #-255]
; CHECK-T2-NEXT: bx lr
entry:
%conv = trunc i32 %x to i8
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -255
store i8 %conv, i8* %add.ptr, align 1
ret void
}
define void @strh_ri_negative255(i8* %p, i32 %x) {
; CHECK-T1-LABEL: strh_ri_negative255:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, #255
; CHECK-T1-NEXT: strh r1, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: strh_ri_negative255:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: strh r1, [r0, #-255]
; CHECK-T2-NEXT: bx lr
entry:
%conv = trunc i32 %x to i16
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -255
%0 = bitcast i8* %add.ptr to i16*
store i16 %conv, i16* %0, align 2
ret void
}
define void @str_ri_negative255(i8* %p, i32 %x) {
; CHECK-T1-LABEL: str_ri_negative255:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: subs r0, #255
; CHECK-T1-NEXT: str r1, [r0]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: str_ri_negative255:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: str r1, [r0, #-255]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -255
%0 = bitcast i8* %add.ptr to i32*
store i32 %x, i32* %0, align 4
ret void
}
; Negative 256 offset
define i32 @ldrsb_ri_negative256(i8* %p) {
; CHECK-T1-LABEL: ldrsb_ri_negative256:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r1, #255
; CHECK-T1-NEXT: mvns r1, r1
; CHECK-T1-NEXT: ldrsb r0, [r0, r1]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrsb_ri_negative256:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: mvn r1, #255
; CHECK-T2-NEXT: ldrsb r0, [r0, r1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -256
%0 = load i8, i8* %add.ptr, align 1
%conv = sext i8 %0 to i32
ret i32 %conv
}
define i32 @ldrsh_ri_negative256(i8* %p) {
; CHECK-T1-LABEL: ldrsh_ri_negative256:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r1, #255
; CHECK-T1-NEXT: mvns r1, r1
; CHECK-T1-NEXT: ldrsh r0, [r0, r1]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrsh_ri_negative256:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: mvn r1, #255
; CHECK-T2-NEXT: ldrsh r0, [r0, r1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -256
%0 = bitcast i8* %add.ptr to i16*
%1 = load i16, i16* %0, align 2
%conv = sext i16 %1 to i32
ret i32 %conv
}
define i32 @ldrb_ri_negative256(i8* %p) {
; CHECK-T1-LABEL: ldrb_ri_negative256:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r1, #255
; CHECK-T1-NEXT: mvns r1, r1
; CHECK-T1-NEXT: ldrb r0, [r0, r1]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrb_ri_negative256:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: mvn r1, #255
; CHECK-T2-NEXT: ldrb r0, [r0, r1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -256
%0 = load i8, i8* %add.ptr, align 1
%conv = zext i8 %0 to i32
ret i32 %conv
}
define i32 @ldrh_ri_negative256(i8* %p) {
; CHECK-T1-LABEL: ldrh_ri_negative256:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r1, #255
; CHECK-T1-NEXT: mvns r1, r1
; CHECK-T1-NEXT: ldrh r0, [r0, r1]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldrh_ri_negative256:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: mvn r1, #255
; CHECK-T2-NEXT: ldrh r0, [r0, r1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -256
%0 = bitcast i8* %add.ptr to i16*
%1 = load i16, i16* %0, align 2
%conv = zext i16 %1 to i32
ret i32 %conv
}
define i32 @ldr_ri_negative256(i8* %p) {
; CHECK-T1-LABEL: ldr_ri_negative256:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r1, #255
; CHECK-T1-NEXT: mvns r1, r1
; CHECK-T1-NEXT: ldr r0, [r0, r1]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: ldr_ri_negative256:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: mvn r1, #255
; CHECK-T2-NEXT: ldr r0, [r0, r1]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -256
%0 = bitcast i8* %add.ptr to i32*
%1 = load i32, i32* %0, align 4
ret i32 %1
}
define void @strb_ri_negative256(i8* %p, i32 %x) {
; CHECK-T1-LABEL: strb_ri_negative256:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r2, #255
; CHECK-T1-NEXT: mvns r2, r2
; CHECK-T1-NEXT: strb r1, [r0, r2]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: strb_ri_negative256:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: mvn r2, #255
; CHECK-T2-NEXT: strb r1, [r0, r2]
; CHECK-T2-NEXT: bx lr
entry:
%conv = trunc i32 %x to i8
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -256
store i8 %conv, i8* %add.ptr, align 1
ret void
}
define void @strh_ri_negative256(i8* %p, i32 %x) {
; CHECK-T1-LABEL: strh_ri_negative256:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r2, #255
; CHECK-T1-NEXT: mvns r2, r2
; CHECK-T1-NEXT: strh r1, [r0, r2]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: strh_ri_negative256:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: mvn r2, #255
; CHECK-T2-NEXT: strh r1, [r0, r2]
; CHECK-T2-NEXT: bx lr
entry:
%conv = trunc i32 %x to i16
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -256
%0 = bitcast i8* %add.ptr to i16*
store i16 %conv, i16* %0, align 2
ret void
}
define void @str_ri_negative256(i8* %p, i32 %x) {
; CHECK-T1-LABEL: str_ri_negative256:
; CHECK-T1: @ %bb.0: @ %entry
; CHECK-T1-NEXT: movs r2, #255
; CHECK-T1-NEXT: mvns r2, r2
; CHECK-T1-NEXT: str r1, [r0, r2]
; CHECK-T1-NEXT: bx lr
;
; CHECK-T2-LABEL: str_ri_negative256:
; CHECK-T2: @ %bb.0: @ %entry
; CHECK-T2-NEXT: mvn r2, #255
; CHECK-T2-NEXT: str r1, [r0, r2]
; CHECK-T2-NEXT: bx lr
entry:
%add.ptr = getelementptr inbounds i8, i8* %p, i32 -256
%0 = bitcast i8* %add.ptr to i32*
store i32 %x, i32* %0, align 4
ret void
}
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