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Use MOVW/MOVT to load immediates on ARM instead of a literal pool.

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This commit is contained in:
SarahW 2018-08-02 22:09:57 +01:00
commit a9d46d95ec
3 changed files with 19 additions and 74 deletions
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24
src/codegen_backend_arm_ops.c
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@ -201,8 +201,7 @@ void host_arm_ADD_IMM(codeblock_t *block, int dst_reg, int src_reg, uint32_t imm
}
else
{
int offset = add_literal(block, imm);
host_arm_LDR_IMM(block, REG_TEMP, REG_LITERAL, offset);
host_arm_MOV_IMM(block, REG_TEMP, imm);
host_arm_ADD_REG_LSL(block, dst_reg, src_reg, REG_TEMP, 0);
}
}
@ -226,8 +225,7 @@ void host_arm_AND_IMM(codeblock_t *block, int dst_reg, int src_reg, uint32_t imm
}
else
{
int offset = add_literal(block, imm);
host_arm_LDR_IMM(block, REG_TEMP, REG_LITERAL, offset);
host_arm_MOV_IMM(block, REG_TEMP, imm);
host_arm_AND_REG_LSL(block, dst_reg, src_reg, REG_TEMP, 0);
}
}
@ -314,8 +312,7 @@ void host_arm_CMN_IMM(codeblock_t *block, int src_reg, uint32_t imm)
}
else
{
int offset = add_literal(block, imm);
host_arm_LDR_IMM(block, REG_TEMP, REG_LITERAL, offset);
host_arm_MOV_IMM(block, REG_TEMP, imm);
host_arm_CMN_REG_LSL(block, src_reg, REG_TEMP, 0);
}
}
@ -338,8 +335,7 @@ void host_arm_CMP_IMM(codeblock_t *block, int src_reg, uint32_t imm)
}
else
{
int offset = add_literal(block, imm);
host_arm_LDR_IMM(block, REG_TEMP, REG_LITERAL, offset);
host_arm_MOV_IMM(block, REG_TEMP, imm);
host_arm_CMP_REG_LSL(block, src_reg, REG_TEMP, 0);
}
}
@ -358,8 +354,7 @@ void host_arm_EOR_IMM(codeblock_t *block, int dst_reg, int src_reg, uint32_t imm
}
else
{
int offset = add_literal(block, imm);
host_arm_LDR_IMM(block, REG_TEMP, REG_LITERAL, offset);
host_arm_MOV_IMM(block, REG_TEMP, imm);
host_arm_EOR_REG_LSL(block, dst_reg, src_reg, REG_TEMP, 0);
}
}
@ -457,8 +452,7 @@ void host_arm_ORR_IMM(codeblock_t *block, int dst_reg, int src_reg, uint32_t imm
}
else
{
int offset = add_literal(block, imm);
host_arm_LDR_IMM(block, REG_TEMP, REG_LITERAL, offset);
host_arm_MOV_IMM(block, REG_TEMP, imm);
host_arm_ORR_REG_LSL(block, dst_reg, src_reg, REG_TEMP, 0);
}
}
@ -519,8 +513,7 @@ void host_arm_SUB_IMM(codeblock_t *block, int dst_reg, int src_reg, uint32_t imm
}
else
{
int offset = add_literal(block, imm);
host_arm_LDR_IMM(block, REG_TEMP, REG_LITERAL, offset);
host_arm_MOV_IMM(block, REG_TEMP, imm);
host_arm_SUB_REG_LSL(block, dst_reg, src_reg, REG_TEMP, 0);
}
}
@ -544,8 +537,7 @@ void host_arm_TST_IMM(codeblock_t *block, int src_reg, uint32_t imm)
}
else
{
int offset = add_literal(block, imm);
host_arm_LDR_IMM(block, REG_TEMP, REG_LITERAL, offset);
host_arm_MOV_IMM(block, REG_TEMP, imm);
host_arm_TST_REG(block, src_reg, REG_TEMP);
}
}